GB1467344A - Life sign monitoring apparatus - Google Patents
Life sign monitoring apparatusInfo
- Publication number
- GB1467344A GB1467344A GB2038274A GB2038274A GB1467344A GB 1467344 A GB1467344 A GB 1467344A GB 2038274 A GB2038274 A GB 2038274A GB 2038274 A GB2038274 A GB 2038274A GB 1467344 A GB1467344 A GB 1467344A
- Authority
- GB
- United Kingdom
- Prior art keywords
- patient
- electrodes
- circuit
- electrode
- tubes
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/271—Arrangements of electrodes with cords, cables or leads, e.g. single leads or patient cord assemblies
- A61B5/273—Connection of cords, cables or leads to electrodes
- A61B5/274—Connection of cords, cables or leads to electrodes using snap or button fasteners
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/339—Displays specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/023—Stethoscopes for introduction into the body, e.g. into the oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/0404—Electrodes for external use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0517—Esophageal electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0519—Endotracheal electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3904—External heart defibrillators [EHD]
- A61N1/39044—External heart defibrillators [EHD] in combination with cardiopulmonary resuscitation [CPR] therapy
Abstract
1467344 Cardiac resuscitator and monitoring apparatus CARDIAC RESUSCITATOR CORP 8 May 1974 20382/74 Heading G1N(E) [Also in Division H4] In a cardiac resuscitator for a patient suffering from a heart attack, means for monitoring electrical activity associated with a patient's heart and means for sensing bodily movement are connected to a logic circuit, which may supply a regular pacing impulse Fig. 12 (not shown) or a defibrillating pulse Fig. 13 (not shown), in dependence upon the sensed electrical activity and movements (Table I) Fig. 6 (not shown). An oropharyngeal airway 10 of the type used for mouth-to-mouth resuscitation is adapted to carry two opposite, positive and negative, electrodes 1 and 2 and a neutral electrode 3. These electrodes are used with a further separate external electrode 5 (for placing over the heart) to supply signals to the logic circuitry and pulse generators 24, Figs. 6, 7, 12 and 13 (not shown). To indicate body movement, the logic circuitry may also receive a signal from a microphone 22, positioned as shown, also Fig. 10 (not shown) sets out its associated signal processing circuit. The microphone may be separate from the airway 10 and may be placed over the patient's neck near a constricted blood vessel to sense sounds indicating body movement. An associated signal processing circuit is disclosed Fig. 11 (not shown) that provides a signal indicating any movement or a signal corresponding to any pulse rate. Fig. 4 shows an elastic belt 26 for fitting around the patient's chest. The belt is joined by a strain gauge 28 whose electrical output is processed Figs. 8 or 9 (not shown) to provide an electrical signal indicating any breathing movements. An alternative arrangement Fig. 5 (not shown) consists of a pair of flexible plastic tongs (36), (38) hinged together in a spring-like manner for making firm contact with the patient's chest. The ends of the tongs carry electrodes and the centre hinged portion carries a conductive sponge material whose resistance varies as it becomes compressed during breathing. All the aforementioned electrodes may be used for receiving electrical signals from the body may also be used to apply the signals from the pacemaker circuit Fig. 12 (not shown) and the defibrillating circuit Fig. 13 (not shown). The description discloses block diagrams of a combined signal processing circuit Figs. 14, 15, 16 and 17 (not shown), together with an alternative circuit Fig. 18 (not shown) which uses cathode ray storage tubes for retaining one or more E.C.G. signals or breath sound traces on a cathode ray tube. A block diagram circuit Fig. 20 (not shown) for providing a numerical indication of the pulse rate is disclosed and a mechanical arrangement Fig. 19 (not shown) for recording the E.C.G. signal on a strip of paper is disclosed. As a substitute for the oro-pharyngeal airway of Fig. 1, a plastic inter tracheal tube 270, Fig. 21, may be employed. A helical conducting wire or ribbon 272 embedded in the surface of the tube, extends from an electrode 274 to electrodes 273 and 277 that are mounted on an expandable portion 275. As before a microphone 276 may be attached. Electrodes in the form of conducting wires 294, Fig. 22, or nasal tubes 290, 292 provide another means of receiving/or applying electrical signals. The nasal tubes may be connected via flexible tubes 282, 284 to a connector 288 for supplying oxygen. As well as serving its normal function a catheter may be converted to become an electrode by winding wire helically on the outside of the catheter. If the patient is conscious, the airway tubes, Figs. 1 and 21 are not practical so the description discloses three types of spring clip electrodes Figs. 24, 25 and 26, Figs. 24 and 25 (not shown), that are intended to be clamped on to the lip or cheek of the patient, to contact the inside and the outside of the mouth. The spring clip electrode may also carry a microphone. Stainless spring steel rings Figs. 27 and 28, Fig. 27 (not shown) may be used as electrodes that are fitted on the fingers of the patient. The ring is normally carried in the distended condition Fig. 27 (not shown), with a ball 342 on one end. After it is placed on the patient's finger, the ball is sprung out of its socket causing the ring to grasp the finger. A similar large wrist bracelet arrangement Figs. 29 and 30 (not shown) but made out of mallable metal is disclosed. The bracelet carries a sponge containing an electrolyte on its inside. The description mentions using temperature sensitive devices to detect body movement.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42974574A | 1974-01-02 | 1974-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1467344A true GB1467344A (en) | 1977-03-16 |
Family
ID=23704559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2038274A Expired GB1467344A (en) | 1974-01-02 | 1974-05-08 | Life sign monitoring apparatus |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5737344B2 (en) |
BR (1) | BR7407633A (en) |
CA (1) | CA1045685A (en) |
DE (1) | DE2426425C2 (en) |
FR (1) | FR2255872B1 (en) |
GB (1) | GB1467344A (en) |
SE (1) | SE401606B (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102332A (en) * | 1977-05-17 | 1978-07-25 | Gessman Lawrence J | Remote, telephonic cardiac resuscitation device |
US4114628A (en) * | 1977-05-31 | 1978-09-19 | Rizk Nabil I | Demand pacemaker with self-adjusting threshold and defibrillating feature |
EP0038080A2 (en) * | 1980-04-16 | 1981-10-21 | Medtronic, Inc. | Patient interactive stimulator |
EP0057213A1 (en) * | 1980-08-08 | 1982-08-11 | R2 Corp | Arrangement for connecting an electrode set to various instruments. |
EP0104287A1 (en) * | 1978-01-30 | 1984-04-04 | Eugene Nelson Scarberry | Emergency medical apparatus |
EP0135134A2 (en) * | 1983-08-11 | 1985-03-27 | Vitacomm Ltd | Esophageal stethoscope and vital signs monitor system |
EP0137500A2 (en) * | 1983-10-13 | 1985-04-17 | Jürgen Prof. Dr. Morgenstern | Physiological sensor |
DE3337188A1 (en) * | 1983-10-13 | 1985-04-25 | Jürgen Prof. Dr. 4000 Düsseldorf Morgenstern | Physiological invasive measurement probe |
EP0157979A2 (en) * | 1984-04-12 | 1985-10-16 | Fukuda Denshi Co., Ltd. | Clip-type electrode for electrocardiographs |
EP0339471A2 (en) * | 1988-04-25 | 1989-11-02 | Lifecor, Inc. (Pennsylvania Corporation) | Portable device for sensing cardiac function and automatically delivering electrical therapy |
WO1991006340A1 (en) * | 1989-11-01 | 1991-05-16 | Ifor Donald Capel | Apparatus and method for transcranial electrotherapy |
EP1057498A3 (en) * | 1999-05-31 | 2004-02-25 | Laerdal Medical AS | System and method for measuring blood flow during defibrillation |
EP1495712A1 (en) * | 2003-07-07 | 2005-01-12 | Olympus Corporation | Blood vessel detection device |
US7308294B2 (en) | 2005-03-16 | 2007-12-11 | Textronics Inc. | Textile-based electrode system |
GB2454220A (en) * | 2007-11-01 | 2009-05-06 | Schlumberger Holdings | Detecting strain in structures |
EP1946699A3 (en) * | 2007-01-20 | 2011-12-07 | Heat GmbH | Device for gathering cardiological examination data from a patient |
US8082762B2 (en) | 2006-10-27 | 2011-12-27 | Textronics, Inc. | Wearable article with band portion adapted to include textile-based electrodes and method of making such article |
CN108888262A (en) * | 2018-08-04 | 2018-11-27 | 福州大学 | Exchange lead-fail detector detection circuit and method for bipolar electrode ECG Gathering System |
EP3750477A1 (en) * | 2015-05-07 | 2020-12-16 | Ecom Medical, Inc. | Systems and method for fabricating invasive ecg probe |
US11147515B2 (en) | 2016-02-16 | 2021-10-19 | Ecom Medical, Inc. | Systems and methods for obtaining cardiovascular parameters |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090518A (en) * | 1975-08-25 | 1978-05-23 | Elam James O | Esophago-pharyngeal airway |
EP0006966B1 (en) * | 1978-03-23 | 1981-10-14 | Hellige GmbH | Device for affixing electrodes and similar biological and physiological transducers in the mouth |
US4289142A (en) * | 1978-11-24 | 1981-09-15 | Kearns Kenneth L | Physiological occurrence, such as apnea, monitor and X-ray triggering device |
GB2129991A (en) * | 1982-10-29 | 1984-05-23 | London Hospital Med Coll | Cardio-respiratory monitor |
GB8723621D0 (en) * | 1987-10-08 | 1987-11-11 | Eidawn Biosensors Ltd | Monitoring of cardiac output |
CA1327838C (en) * | 1988-06-13 | 1994-03-15 | Fred Zacouto | Implantable device to prevent blood clotting disorders |
FR2632533B1 (en) * | 1988-06-13 | 1997-06-06 | Zacouto Fred | HEART PROTECTION OR REPAIR DEVICE |
FR2636847B1 (en) * | 1988-09-02 | 1990-12-28 | Eldasouqi Muhammad | AUTOMATIC POST-MORTEM MONITORING SYSTEM FOR CLINICAL SIGNS OF LIFE AND POSSIBLE EMERGENCY CONTROL |
FR2643811A1 (en) * | 1989-03-06 | 1990-09-07 | Espinasse Francoise | Annular electrode which can be used in particular for making electrocardiograms using an electrocardiography apparatus |
NL2001697C2 (en) * | 2008-06-18 | 2009-12-22 | Nasophlex B V | Nose stimulator for producing a stimulation signal to a nose. |
NL2001698C2 (en) * | 2008-06-18 | 2009-12-22 | Nasophlex B V | Cardioverter / defibrillator. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2003138C3 (en) * | 1970-01-24 | 1975-10-16 | Siemens Ag | Esophageal probe |
DE2005934A1 (en) * | 1970-02-10 | 1971-08-26 | Siemens Ag | Medical device group |
US3716059A (en) * | 1970-08-24 | 1973-02-13 | Cardiac Resuscitator Corp | Cardiac resuscitator |
US3857398A (en) * | 1971-12-13 | 1974-12-31 | L Rubin | Electrical cardiac defibrillator |
-
1974
- 1974-05-08 GB GB2038274A patent/GB1467344A/en not_active Expired
- 1974-05-08 CA CA199,306A patent/CA1045685A/en not_active Expired
- 1974-05-10 SE SE7406310A patent/SE401606B/en not_active IP Right Cessation
- 1974-05-31 DE DE2426425A patent/DE2426425C2/en not_active Expired
- 1974-06-07 FR FR7419858A patent/FR2255872B1/fr not_active Expired
- 1974-09-06 JP JP10213774A patent/JPS5737344B2/ja not_active Expired
- 1974-09-13 BR BR7633/74A patent/BR7407633A/en unknown
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102332A (en) * | 1977-05-17 | 1978-07-25 | Gessman Lawrence J | Remote, telephonic cardiac resuscitation device |
US4114628A (en) * | 1977-05-31 | 1978-09-19 | Rizk Nabil I | Demand pacemaker with self-adjusting threshold and defibrillating feature |
EP0104287A1 (en) * | 1978-01-30 | 1984-04-04 | Eugene Nelson Scarberry | Emergency medical apparatus |
EP0038080A2 (en) * | 1980-04-16 | 1981-10-21 | Medtronic, Inc. | Patient interactive stimulator |
EP0038080A3 (en) * | 1980-04-16 | 1981-12-30 | Medtronic, Inc. | Patient interactive stimulator |
EP0057213A1 (en) * | 1980-08-08 | 1982-08-11 | R2 Corp | Arrangement for connecting an electrode set to various instruments. |
EP0057213A4 (en) * | 1980-08-08 | 1984-05-03 | R2 Corp | Arrangement for connecting an electrode set to various instruments. |
EP0135134A3 (en) * | 1983-08-11 | 1987-06-03 | Vitacomm Ltd | Esophageal stethoscope and vital signs monitor system |
EP0135134A2 (en) * | 1983-08-11 | 1985-03-27 | Vitacomm Ltd | Esophageal stethoscope and vital signs monitor system |
EP0137500A2 (en) * | 1983-10-13 | 1985-04-17 | Jürgen Prof. Dr. Morgenstern | Physiological sensor |
DE3337188A1 (en) * | 1983-10-13 | 1985-04-25 | Jürgen Prof. Dr. 4000 Düsseldorf Morgenstern | Physiological invasive measurement probe |
EP0137500A3 (en) * | 1983-10-13 | 1985-06-05 | Jurgen Prof. Dr. Morgenstern | |
EP0157979A2 (en) * | 1984-04-12 | 1985-10-16 | Fukuda Denshi Co., Ltd. | Clip-type electrode for electrocardiographs |
EP0157979A3 (en) * | 1984-04-12 | 1987-09-02 | Fukuda Denshi Co., Ltd. | Clip-type electrode for electrocardiographs |
EP0339471A3 (en) * | 1988-04-25 | 1991-11-27 | Lifecor, Inc. (Pennsylvania Corporation) | Portable device for sensing cardiac function and automatically delivering electrical therapy |
EP0339471A2 (en) * | 1988-04-25 | 1989-11-02 | Lifecor, Inc. (Pennsylvania Corporation) | Portable device for sensing cardiac function and automatically delivering electrical therapy |
GB2244654B (en) * | 1989-11-01 | 1994-02-09 | Ronald William Davey | Apparatus and electrode for transcranial electrotherapy |
WO1991006340A1 (en) * | 1989-11-01 | 1991-05-16 | Ifor Donald Capel | Apparatus and method for transcranial electrotherapy |
GB2244654A (en) * | 1989-11-01 | 1991-12-11 | Ifor Donald Capel | Apparatus and method for transcranial electrotherapy |
EP1057498A3 (en) * | 1999-05-31 | 2004-02-25 | Laerdal Medical AS | System and method for measuring blood flow during defibrillation |
AU778336B2 (en) * | 1999-05-31 | 2004-12-02 | Laerdal Medical As | Method and system of determining whether a lifeless person has a pulse |
US7488292B2 (en) | 2003-07-07 | 2009-02-10 | Olympus Corporation | Blood vessel detection device |
EP1495712A1 (en) * | 2003-07-07 | 2005-01-12 | Olympus Corporation | Blood vessel detection device |
US7970451B2 (en) | 2005-03-16 | 2011-06-28 | Textronics, Inc. | Textile-based electrode |
US7474910B2 (en) | 2005-03-16 | 2009-01-06 | Textronics Inc. | Textile-based electrode |
US7966052B2 (en) | 2005-03-16 | 2011-06-21 | Textronics, Inc. | Textile-based electrode |
US7308294B2 (en) | 2005-03-16 | 2007-12-11 | Textronics Inc. | Textile-based electrode system |
US8082762B2 (en) | 2006-10-27 | 2011-12-27 | Textronics, Inc. | Wearable article with band portion adapted to include textile-based electrodes and method of making such article |
EP1946699A3 (en) * | 2007-01-20 | 2011-12-07 | Heat GmbH | Device for gathering cardiological examination data from a patient |
GB2454220B (en) * | 2007-11-01 | 2012-05-23 | Schlumberger Holdings | Apparatus and methods for detecting strain in structures |
GB2454220A (en) * | 2007-11-01 | 2009-05-06 | Schlumberger Holdings | Detecting strain in structures |
EP3750477A1 (en) * | 2015-05-07 | 2020-12-16 | Ecom Medical, Inc. | Systems and method for fabricating invasive ecg probe |
US10993667B2 (en) | 2015-05-07 | 2021-05-04 | Ecom Medical, Inc. | Method and apparatus for applying a tracing to an expandable device |
US20210219920A1 (en) * | 2015-05-07 | 2021-07-22 | Ecom Medical, Inc. | Systems and methods for internal ecg acquisition |
US11147515B2 (en) | 2016-02-16 | 2021-10-19 | Ecom Medical, Inc. | Systems and methods for obtaining cardiovascular parameters |
CN108888262A (en) * | 2018-08-04 | 2018-11-27 | 福州大学 | Exchange lead-fail detector detection circuit and method for bipolar electrode ECG Gathering System |
CN108888262B (en) * | 2018-08-04 | 2023-08-04 | 福州大学 | Alternating current lead falling detection circuit and method for double-electrode electrocardio acquisition system |
Also Published As
Publication number | Publication date |
---|---|
SE401606B (en) | 1978-05-22 |
CA1045685A (en) | 1979-01-02 |
SE7406310L (en) | 1975-07-03 |
FR2255872B1 (en) | 1979-03-16 |
FR2255872A1 (en) | 1975-07-25 |
BR7407633A (en) | 1976-05-18 |
DE2426425C2 (en) | 1985-10-03 |
JPS5737344B2 (en) | 1982-08-09 |
JPS5098183A (en) | 1975-08-04 |
DE2426425A1 (en) | 1975-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |