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Expired Canadian patentCanada

Device for marking and/or cutting pipes

CA 1111241 A · Owner: Pahnke, Bror · Inventors: Eriksson, Bengt; Pahnke, Bror

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A device for marking and/or cutting a pipe which includes a fixture for clamping one of the pipe fittings in a desired position relative to an axis passing through the pivot center of a projecting boom to which an operating element is affixed in such a way to follow the outside of the wall of the pipe fitting at a present distance from the axis, preferably matching the radius of the other pipe fitting, as the projecting boom pivots about its pivot center.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 18, 1977
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111241 A
Classification (IPC)G01B5/20 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedNov 18, 1977Patent grantedOct 27, 1981Term endedOct 27, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.