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Expired Canadian patentCanada

Pushbutton switch, particularly key switch

CA 1312896 C · Owner: Hinze, Klaus · Inventors: Heeb, Alfred; Schulze, Wolfgang; Wisskirchen, Klaus Bernd

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

Pushbutton Switch, Particularly Key Switch In a pushbutton switch, particularly a key switch having an, operating button, a member movable in the direction of actuation, particularly a contact-actuating member and a, restoring spring which is loaded when the operating button is depressed and which moves the operating button to its normal position when the button is released, at least one laterally resiliently deflectable locking member (9 10), which is either, fixed or movable together with the movable member (1) and a, locking edge (4) engaging or movable into engagement with the locking member (9, 10) are arranged in accordance with the invention, so that when the operating button (23) is …

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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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 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.
FiledJuly 8, 1987
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312896 C
Classification (IPC)H01H13/20 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 8, 1987Patent grantedJan 19, 1993Term endedJan 19, 2010

Sources & verification

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