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Expired Canadian patentCanada

Multiple screwdriver with mechanical blade release

CA 1212268 A · Owner: Cormier, Micheal P. · Inventors: Cormier, Micheal P.

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 multiple driver tool having a housing and a slidable magazine for storing several bits with various working ends. A hollow passage in the housing provides a guide for the magazine which can be pulled out from the housing. The inner end of each bit has engaging means that enables it to connect to a plate in the housing as the magazine is rotated in its extended position. An opening at the lower end of the magazine allows the working end of a selected bit to be exposed, when the magazine is pushed back into the handle.

Read the whole patent

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 7, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 29, 1985
GrantedOctober 7, 1986
Term endedOctober 7, 2003
Patent numberCA 1212268 A
Classification (IPC)B25D15/00 +2 more

Timeline

Timeline From CIPO dates

198619881990199219941996199820002002Application filedMarch 29, 1985Patent grantedOct 7, 1986Term endedOct 7, 2003

Sources & verification

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