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Expired Canadian patentCanada

Eyeglass frame structure and method of assembling same

CA 1290963 C · Owner: Cabot Safety Corporation · Inventors: Grendol, Clark L.

CIPO record

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

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Abstract From the Canadian patent

Disclosed is an eyeglass frame and method of assembling such a frame which provides for quick and easy assembly. The eyeglass frame includes a lens supporting structure and at least one temple. For each temple the lens supporting structure includes a temple receiving member having a ramped slot. Each temple includes a means for supporting a pin so that the pin extends beyond the surfaces of the temple. In assembling the frame the pin is aligned with slots, in the temple receiving member of the lens supporting structure, and the temple is forced through these slots forcing the upper and lower walls of the temple receiving member apart until the pin is captured by a hole at the end of the …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • 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 6, 1985
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290963 C
Classification (IPC)G02C5/22 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedSep 6, 1985Patent grantedOct 22, 1991Term endedOct 22, 2008

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