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Expired Canadian patentCanada

Spring element for a shock isolating mount

CA 2004099 C · Owner: Peterson, Francis C. · Inventors: Peterson, Francis C.; Despins, Robert J.

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 spring element for a shock isolating mount is adapted for multiple assembling and disassembling. The spring element comprises an annular segment having holding tabs extending radially inwardly from one end thereof; and aligning tabs which are shorter and wider than the holding tabs, and which extend radially inwardly from the same end of the annular segment.

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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

  • Filed November 28, 1989 and granted April 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.
FiledNovember 28, 1989
GrantedApril 1, 1997
Term endedNovember 28, 2009
Patent numberCA 2004099 C
Classification (IPC)B62D21/11 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 28, 1989Patent grantedApril 1, 1997Term endedNov 28, 2009

Sources & verification

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