GB9219921D0 - Protactor - Google Patents

Protactor

Info

Publication number
GB9219921D0
GB9219921D0 GB929219921A GB9219921A GB9219921D0 GB 9219921 D0 GB9219921 D0 GB 9219921D0 GB 929219921 A GB929219921 A GB 929219921A GB 9219921 A GB9219921 A GB 9219921A GB 9219921 D0 GB9219921 D0 GB 9219921D0
Authority
GB
United Kingdom
Prior art keywords
protactor
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
GB929219921A
Other versions
GB2264364B (en
GB2264364A (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9219921D0 publication Critical patent/GB9219921D0/en
Publication of GB2264364A publication Critical patent/GB2264364A/en
Application granted granted Critical
Publication of GB2264364B publication Critical patent/GB2264364B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
    • G01B3/563—Protractors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
GB9219921A 1992-02-20 1992-09-21 Protractor Expired - Fee Related GB2264364B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929203563A GB9203563D0 (en) 1992-02-20 1992-02-20 Protractor with a rotor

Publications (3)

Publication Number Publication Date
GB9219921D0 true GB9219921D0 (en) 1992-11-04
GB2264364A GB2264364A (en) 1993-08-25
GB2264364B GB2264364B (en) 1994-11-30

Family

ID=10710710

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929203563A Pending GB9203563D0 (en) 1992-02-20 1992-02-20 Protractor with a rotor
GB9219921A Expired - Fee Related GB2264364B (en) 1992-02-20 1992-09-21 Protractor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929203563A Pending GB9203563D0 (en) 1992-02-20 1992-02-20 Protractor with a rotor

Country Status (1)

Country Link
GB (2) GB9203563D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575173A (en) * 2013-11-25 2014-02-12 郭永然 180-degree vernier protractor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022014C2 (en) * 2002-11-28 2004-06-02 Cornelis Jan Admiraal Compass, comprises first disc with angle markings and null line and transparent second disc with direction indicator line
CN102012207B (en) * 2010-12-13 2012-05-09 山东科技大学 Angle measuring instrument
ITUB20154634A1 (en) * 2015-10-12 2017-04-12 Franco Carboni A GONIOGRAPH
CN105806171A (en) * 2016-04-11 2016-07-27 黄友谊 Measuring structure achieved by means of double concentric circles, method and application of the method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB655224A (en) *
GB339980A (en) * 1929-09-11 1930-12-11 Horace Edwin Brimfield Improved protractor
GB589758A (en) * 1945-03-31 1947-06-30 Alan Sproxton Combined calculating-device and protractor
CH251900A (en) * 1946-07-05 1947-11-30 Rueedi Oskar Drawing apparatus on drawing boards.
GB663970A (en) * 1949-06-22 1951-01-02 George Alfred Crook Improvements relating to drawing instruments
US3460261A (en) * 1968-01-24 1969-08-12 Arnold J Frey Drafting device
US4791733A (en) * 1987-07-22 1988-12-20 Huey Bao Co., Ltd. Student's multi-function protractor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575173A (en) * 2013-11-25 2014-02-12 郭永然 180-degree vernier protractor

Also Published As

Publication number Publication date
GB2264364B (en) 1994-11-30
GB9203563D0 (en) 1992-04-08
GB2264364A (en) 1993-08-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020921