GB2029334A - Wheel Chair - Google Patents

Wheel Chair Download PDF

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Publication number
GB2029334A
GB2029334A GB7925247A GB7925247A GB2029334A GB 2029334 A GB2029334 A GB 2029334A GB 7925247 A GB7925247 A GB 7925247A GB 7925247 A GB7925247 A GB 7925247A GB 2029334 A GB2029334 A GB 2029334A
Authority
GB
United Kingdom
Prior art keywords
frame
seat section
wheel chair
patient
rests
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7925247A
Other versions
GB2029334B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seenus Nederland Bv R Van
Original Assignee
Seenus Nederland Bv R Van
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seenus Nederland Bv R Van filed Critical Seenus Nederland Bv R Van
Publication of GB2029334A publication Critical patent/GB2029334A/en
Application granted granted Critical
Publication of GB2029334B publication Critical patent/GB2029334B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/121—Rests specially adapted therefor, e.g. for the head or the feet for head or neck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/107—Arrangements for adjusting the seat positioning the whole seat forward or rearward
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Handcart (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

A wheel chair or the like comprises a frame 1 having rollers, wheels or like means 2, 3; a seat section 5 including arm, foot, and back rests 6, 7, 8, mounted on said frame; and drive means 4 mounted on said frame for the travelling movement of the wheel chair. According to the invention the seat section along with the arm, foot, and back rests is mounted on the frame for tilting movement relative to said frame, and there are provided adjusting means 10, operable by said drive means, for bringing the seat section into a desired position. <IMAGE>

Description

SPECIFICATION Wheel Chair This invention relates to a wheel chair or the like.
For more or less seriously physically handicapped patients, there have been developed certain provisions on wheel chairs which enable the patients to transport themselves without the help of others.
This is more difficult if the patient is very seriously disabled, for example, owing to congenital or acquired damage to the spine or the central nervous system. In addition to having difficulties in walking, such patients are in need of supports at various places, and further require adaptation of their sitting posture to different activities.
Wheel chairs driven by a motor are wellknown. In those cases, however, they have been designed particularly to meet a patient's difficulties in walking, and it is contemplated that practically all other functions can still be performed by the patient.
It is an object of the present invention to make a wheel chair of the last-mentioned kind more universally applicable, that is to say, to render it suitable for use by patients having not only a walking handicap, but also other serious conditions involving the loss or normal muscular functions, with particular attention to the patient's sitting posture, adapted to particular activities.
The present invention aims at providing a wheel chair or the like, which is a helpful aid even in cases in which the patient is able virtually exclusively to move the fingers.
According to the invention, there is provided a wheel chair or the like comprising a frame having rollers, wheels or like means; a seat section including arm, foot and back rests, mounted on said frame; and drive means mounted on said frame for the travelling movement of the wheel chair, characterized in that the seat section along with the arm, foot and back rests is mounted on the frame for tilting movement relative to said frame, and that there are provided adjusting means, operable by said drive means, for bringing the seat section into a desired position.
Accordingly, in addition to causing the wheel chair to move, to stop and to perform other functions connected with the transportation of a patient, the patient is capable of adjusting the seat section to any desired tilted position, using the drive means provided in the frame.
The adjusting means for causing the seat section to tilt relatively to the frame can take various forms. An effective solution is a lifting device disposed between the frame and the seat section, and operable via an operating panel.
A mechanical, pneumatic, or hydraulic jack has been found to be very suitable for the purpose.
Further features of the invention will become apparent from the following description, read with reference to the accompanying drawing, which, highly diagrammatically, illustrates a side view of the wheel chair or the like according to the present invention.
Referring to the drawing, there is shown a wheel chair having a frame 1, preferably made of light and strong tubing. The wheel chair has two large rear wheels 2 provided with pneumatic tyres and two small front wheels or rollers 3, which can act as steering wheels.
Mounted in frame 1 is a drive unit 4, comprising, for example, an electric motor, a battery, conduits, switches and the like, for enabling certain functions.
Mounted on frame 1 is further a seat section 5, equipped with arm rests 6, foot rests 7, and a back rest 8. This seat section subsassembly is mounted for tilting movement relative to frame 1 about a shaft 9. In order that seat section 5 may be put into any desired position, a lifting device 10 is provided between seat section 5 and frame 1 This lifting device may be a jack operable mechanically, pneumatically or hydraulically. The actuating command can be given from an operating panel 11, which is conveniently situated within easy reach of the patient's hand.
The lowest position of the seat section is shown dotted in the drawing. Any other position, for example as shown in fully drawn lines, is obtained by sending, via the operating panel, a given actuating pulse to the commanding mechanism.
In the embodiment shown, the wheel chair can be displaced by electric means, and the same source of voltage is here used to provide the power to tilt the seat section.
For heavily handicapped patients, the tiltability of the seat section alone is not sufficient to meet requirements. Therefore the wheel chair according to the invention has still other facilities.
The foot rests, for example, are rotatable and slidable relatively to the frame portion 13 at 11 and 12. The angular position of back rest 8 relative to the seat 5 is adjustable through a mechanism comprising a strip 15 with holes therein and a peg plate 14.
The back rests has a cushion 1 6 with adjustable lumbar rests, one of which is shown at 1 7. An adjustable head rest, of known construction, is shown at 1 8. For completeness' sake the back rest is provided with handles, one of which is shown at 1 9. This provision is necessary to provide for the case when the automatic travel actuating system fails or possibly is absent.
Claims
1. A wheel chair or the like comprising a frame having rollers, wheels or like means; a seat section including arm, foot, and back rests, mounted on said frame; and drive means mounted on said frame for the travelling movement of the wheel chair, characterized in that the seat section along with the arm, foot, and back rests is mounted on the frame for tilting movement relative to said frame, and that there are provided adjusting means, operable by said
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Wheel Chair This invention relates to a wheel chair or the like. For more or less seriously physically handicapped patients, there have been developed certain provisions on wheel chairs which enable the patients to transport themselves without the help of others. This is more difficult if the patient is very seriously disabled, for example, owing to congenital or acquired damage to the spine or the central nervous system. In addition to having difficulties in walking, such patients are in need of supports at various places, and further require adaptation of their sitting posture to different activities. Wheel chairs driven by a motor are wellknown. In those cases, however, they have been designed particularly to meet a patient's difficulties in walking, and it is contemplated that practically all other functions can still be performed by the patient. It is an object of the present invention to make a wheel chair of the last-mentioned kind more universally applicable, that is to say, to render it suitable for use by patients having not only a walking handicap, but also other serious conditions involving the loss or normal muscular functions, with particular attention to the patient's sitting posture, adapted to particular activities. The present invention aims at providing a wheel chair or the like, which is a helpful aid even in cases in which the patient is able virtually exclusively to move the fingers. According to the invention, there is provided a wheel chair or the like comprising a frame having rollers, wheels or like means; a seat section including arm, foot and back rests, mounted on said frame; and drive means mounted on said frame for the travelling movement of the wheel chair, characterized in that the seat section along with the arm, foot and back rests is mounted on the frame for tilting movement relative to said frame, and that there are provided adjusting means, operable by said drive means, for bringing the seat section into a desired position. Accordingly, in addition to causing the wheel chair to move, to stop and to perform other functions connected with the transportation of a patient, the patient is capable of adjusting the seat section to any desired tilted position, using the drive means provided in the frame. The adjusting means for causing the seat section to tilt relatively to the frame can take various forms. An effective solution is a lifting device disposed between the frame and the seat section, and operable via an operating panel. A mechanical, pneumatic, or hydraulic jack has been found to be very suitable for the purpose. Further features of the invention will become apparent from the following description, read with reference to the accompanying drawing, which, highly diagrammatically, illustrates a side view of the wheel chair or the like according to the present invention. Referring to the drawing, there is shown a wheel chair having a frame 1, preferably made of light and strong tubing. The wheel chair has two large rear wheels 2 provided with pneumatic tyres and two small front wheels or rollers 3, which can act as steering wheels. Mounted in frame 1 is a drive unit 4, comprising, for example, an electric motor, a battery, conduits, switches and the like, for enabling certain functions. Mounted on frame 1 is further a seat section 5, equipped with arm rests 6, foot rests 7, and a back rest 8. This seat section subsassembly is mounted for tilting movement relative to frame 1 about a shaft 9. In order that seat section 5 may be put into any desired position, a lifting device 10 is provided between seat section 5 and frame 1 This lifting device may be a jack operable mechanically, pneumatically or hydraulically. The actuating command can be given from an operating panel 11, which is conveniently situated within easy reach of the patient's hand. The lowest position of the seat section is shown dotted in the drawing. Any other position, for example as shown in fully drawn lines, is obtained by sending, via the operating panel, a given actuating pulse to the commanding mechanism. In the embodiment shown, the wheel chair can be displaced by electric means, and the same source of voltage is here used to provide the power to tilt the seat section. For heavily handicapped patients, the tiltability of the seat section alone is not sufficient to meet requirements. Therefore the wheel chair according to the invention has still other facilities. The foot rests, for example, are rotatable and slidable relatively to the frame portion 13 at 11 and 12. The angular position of back rest 8 relative to the seat 5 is adjustable through a mechanism comprising a strip 15 with holes therein and a peg plate 14. The back rests has a cushion 1 6 with adjustable lumbar rests, one of which is shown at 1 7. An adjustable head rest, of known construction, is shown at 1 8. For completeness' sake the back rest is provided with handles, one of which is shown at 1 9. This provision is necessary to provide for the case when the automatic travel actuating system fails or possibly is absent. Claims
1. A wheel chair or the like comprising a frame having rollers, wheels or like means; a seat section including arm, foot, and back rests, mounted on said frame; and drive means mounted on said frame for the travelling movement of the wheel chair, characterized in that the seat section along with the arm, foot, and back rests is mounted on the frame for tilting movement relative to said frame, and that there are provided adjusting means, operable by said drive means, for bringing the seat section into a desired position.
2. A wheel chair or the like as claimed in Claim 1, wherein said adjusting means comprise a jack, operable mechanically, pneumatically or hydraulically, and mounted between said seat section and said frame.
3. A wheel chair or the like as claimed in Claim 1 or 2, wherein said back rest is adjustable relatively to said seat section.
4. A wheel chair or the like substantially as hereinbefore described with reference to the accompanying drawing.
GB7925247A 1978-08-31 1979-07-19 Wheel chair Expired GB2029334B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7808976A NL7808976A (en) 1978-08-31 1978-08-31 WHEELCHAIR OR THE LIKE.

Publications (2)

Publication Number Publication Date
GB2029334A true GB2029334A (en) 1980-03-19
GB2029334B GB2029334B (en) 1983-03-23

Family

ID=19831471

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7925247A Expired GB2029334B (en) 1978-08-31 1979-07-19 Wheel chair

Country Status (10)

Country Link
BE (1) BE878501A (en)
CA (1) CA1140445A (en)
DE (1) DE2901991A1 (en)
DK (1) DK320079A (en)
FR (1) FR2434616B1 (en)
GB (1) GB2029334B (en)
IE (1) IE48543B1 (en)
IT (1) IT1122528B (en)
LU (1) LU80853A1 (en)
NL (1) NL7808976A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124557A (en) * 1982-03-13 1984-02-22 Peter Arthur Mcardle Wheelchairs
US4561823A (en) * 1982-12-24 1985-12-31 Hatrick Industries Limited Wheelchair tipping apparatus
GB2170698A (en) * 1984-12-20 1986-08-13 Broadstand Ltd Chair
US4643446A (en) * 1984-10-11 1987-02-17 The Stc Companies, Inc. Mobile chair with removable rear wheel assembly
GB2184006A (en) * 1985-12-16 1987-06-17 Jeremy Joseph Fry Adjustable wheelchair
US4732423A (en) * 1986-10-27 1988-03-22 Bio-Architectural Design, Inc. Invalid's chair construction
US4893827A (en) * 1988-08-31 1990-01-16 Gunnell, Inc. Chair construction for incapacitated persons
US5044647A (en) * 1989-11-17 1991-09-03 Folio Products, Inc. Stabilized reclining wheelchair seat
GB2257032A (en) * 1991-06-19 1993-01-06 Peter Alan Smith Nursing chair and cushion therefor
US5297021A (en) * 1992-11-16 1994-03-22 Koerlin James M Zero shear recliner/tilt wheelchair seat
FR2742641A1 (en) * 1995-12-21 1997-06-27 Degonda Rehab Sa STATIONARY OR ROLLING RECLINING SEAT DEVICE, ESPECIALLY FOR SICK OR HANDICAPPED
GB2333500A (en) * 1998-01-22 1999-07-28 Invacare Deutschland Gmbh Folding wheelchair with tilting upper frame
GB2351264A (en) * 1999-06-22 2000-12-27 British Aerospace Wheelchair having means to assist ingress and egress of a disabled person from a vehicle
DE102005020914B3 (en) * 2005-05-04 2006-03-09 Meyra Wilhelm Meyer Gmbh & Co. Kg Electric wheelchair comprises a base chassis supporting a lifting column with a frame fixed to the free end region
US8061755B2 (en) * 2004-09-18 2011-11-22 Otto Bock Healthcare Gmbh Vehicle with driver's seat with adjustable inclination
CN104000697A (en) * 2014-05-08 2014-08-27 河南科技大学 Self-balancing wheelchair structure

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483222B1 (en) * 1980-05-28 1985-07-05 Heuliez Sa Louis DEVICE FOR TRANSFERRING A DISABLED BETWEEN A MOTOR VEHICLE SEAT AND A ROLLING TRUCK
DE3244922A1 (en) * 1982-12-04 1984-06-07 Bernhard 4790 Paderborn Elbers Vehicle for the disabled
DE3322586C1 (en) * 1983-06-23 1985-01-31 Tünkers Maschinenbau GmbH, 4030 Ratingen Disabled wheelchair
DE3539455A1 (en) * 1985-02-21 1987-05-14 Heinz Gehrmeyer Wheel-chair
DE3506029A1 (en) * 1985-02-21 1986-08-28 Heinz 4500 Osnabrück Gehrmeyer Wheelchair
GB8804576D0 (en) * 1988-02-26 1988-03-30 Wickham J E A Improvements in/relating to patient presentation
CN105287116A (en) * 2014-06-26 2016-02-03 周广刚 Wheelchair enabling automatic balance of seat

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753919A (en) * 1953-05-07 1956-07-10 Sta Firm Chair Corp Construction of invalid's chair
US3111181A (en) * 1961-07-05 1963-11-19 George D Yatich Powered wheelchair
US3185495A (en) * 1963-12-18 1965-05-25 Mobilaid Inc Wheel chair with reclining backrest and movable axle associated therewith
US3198575A (en) * 1964-02-06 1965-08-03 Harry O Hawkins Wieel chair with posture adjustment
GB989715A (en) * 1964-04-09 1965-04-22 Everest & Jennings Transfer chair
GB1301595A (en) * 1970-10-09 1972-12-29
DE2703727C2 (en) * 1977-01-29 1985-05-15 Tünkers Maschinenbau GmbH, 4030 Ratingen Motorized indoor wheelchair for the sick, the physically handicapped and the mobility impaired

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124557A (en) * 1982-03-13 1984-02-22 Peter Arthur Mcardle Wheelchairs
US4561823A (en) * 1982-12-24 1985-12-31 Hatrick Industries Limited Wheelchair tipping apparatus
US4643446A (en) * 1984-10-11 1987-02-17 The Stc Companies, Inc. Mobile chair with removable rear wheel assembly
GB2170698A (en) * 1984-12-20 1986-08-13 Broadstand Ltd Chair
GB2184006A (en) * 1985-12-16 1987-06-17 Jeremy Joseph Fry Adjustable wheelchair
US4732423A (en) * 1986-10-27 1988-03-22 Bio-Architectural Design, Inc. Invalid's chair construction
US4893827A (en) * 1988-08-31 1990-01-16 Gunnell, Inc. Chair construction for incapacitated persons
US5044647A (en) * 1989-11-17 1991-09-03 Folio Products, Inc. Stabilized reclining wheelchair seat
GB2257032B (en) * 1991-06-19 1995-06-07 Peter Alan Smith Nursing chair and cushion therefor
GB2257032A (en) * 1991-06-19 1993-01-06 Peter Alan Smith Nursing chair and cushion therefor
US5297021A (en) * 1992-11-16 1994-03-22 Koerlin James M Zero shear recliner/tilt wheelchair seat
FR2742641A1 (en) * 1995-12-21 1997-06-27 Degonda Rehab Sa STATIONARY OR ROLLING RECLINING SEAT DEVICE, ESPECIALLY FOR SICK OR HANDICAPPED
WO1997023187A1 (en) * 1995-12-21 1997-07-03 Degonda-Rehab S.A. Stationary or wheeled reclining seat device, in particular for a sick or disabled person
US6217114B1 (en) 1995-12-21 2001-04-17 Degonda-Rehab Sa Stationary or wheeled inclinable seat arrangement, in particular for the sick or handicapped
GB2333500A (en) * 1998-01-22 1999-07-28 Invacare Deutschland Gmbh Folding wheelchair with tilting upper frame
US6352275B1 (en) 1998-01-22 2002-03-05 Invacare Deutschland Gmbh Wheelchair
GB2351264A (en) * 1999-06-22 2000-12-27 British Aerospace Wheelchair having means to assist ingress and egress of a disabled person from a vehicle
US8061755B2 (en) * 2004-09-18 2011-11-22 Otto Bock Healthcare Gmbh Vehicle with driver's seat with adjustable inclination
DE102005020914B3 (en) * 2005-05-04 2006-03-09 Meyra Wilhelm Meyer Gmbh & Co. Kg Electric wheelchair comprises a base chassis supporting a lifting column with a frame fixed to the free end region
EP1719485A1 (en) * 2005-05-04 2006-11-08 Meyra Wilhelm Meyer Gmbh & Co. Kg Electric wheel chair
CN104000697A (en) * 2014-05-08 2014-08-27 河南科技大学 Self-balancing wheelchair structure

Also Published As

Publication number Publication date
IE48543B1 (en) 1985-02-20
LU80853A1 (en) 1980-08-08
DE2901991A1 (en) 1980-03-13
BE878501A (en) 1980-02-29
NL7808976A (en) 1980-03-04
CA1140445A (en) 1983-02-01
GB2029334B (en) 1983-03-23
IT7925332A0 (en) 1979-08-29
FR2434616A1 (en) 1980-03-28
IT1122528B (en) 1986-04-23
DK320079A (en) 1980-03-01
FR2434616B1 (en) 1984-05-25

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950719