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Expired Canadian patentCanada

Locking mechanism for multifunctional electronic lock

CA 1319522 C · Owner: Emhart Inc. · Inventors: Frolov, George

CIPO record

Overview

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

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Abstract From the Canadian patent

An electronic door locking apparatus which can perform a number of functions is provided. The apparatus features a locking plate which is operated by solenoid action in such a manner that battery drain is minimized. The apparatus may remain in an unlocked position for long periods of time without draining power.

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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 June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 30, 1988
GrantedJune 29, 1993
Term endedJune 29, 2010
Patent numberCA 1319522 C
Classification (IPC)E05B47/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 30, 1988Patent grantedJune 29, 1993Term endedJune 29, 2010

Sources & verification

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