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Expired Canadian patentCanada

Tailcap switch-focus flashlight

CA 1331978 C · Owner: Mag Instrument, Inc. · Inventors: Delong, Robert Joseph; Lewis, Armis Lionel; Maglica, Anthony

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 flashlight having a switch and beam adjustment mechanism located in the tailcap whereby the flashlight may be turned on and focused with one hand without changing the grip on the flashlight by that hand. Batteries of "AAAA" size are contemplated for use in one embodiment of the flashlight.

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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 September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1988
GrantedSeptember 13, 1994
Term endedSeptember 13, 2011
Patent numberCA 1331978 C
Classification (IPC)H01H13/58 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 28, 1988Patent grantedSep 13, 1994Term endedSep 13, 2011

Sources & verification

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