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Expired Canadian patentCanada

Tube bending tool with angle sighting means

CA 1052678 A · Owner: Greenlee Bros. And Co. · Inventors: Linquist, Wayne A.

CIPO record

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

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Abstract From the Canadian patent

A band bender tool for bending tubes pipes, conduits and other, tubular material and which is provided with raised indicators on a bending shoe and handle socket that coact with a conical sighting indicator disposed in a position above the shoe, to allow an operator to accurately bend a pipe to a desired angle of bend. A contoured foot treadle is provided with serrations which prevent slippage of the foot of an operator during a bending operation, so as to permit the operator to employ leg power to the fullest advantage. -2-

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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 April 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 17, 1979
Term endedApril 17, 1996
Patent numberCA 1052678 A
Classification (IPC)B21D9/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 17, 1979Term endedApril 17, 1996

Sources & verification

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