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Expired Canadian patentCanada

Display tensioning frame

CA 1237892 A · Owner: Marketing Displays, Inc. · Inventors: Hillstrom, Kevin D.; Seely, James R.

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

The specification describes a display frame for use in holding a sign panel. The frame is formed of a number. of frame sections each having a base a cover rotatably con-, nected thereto a slide in the base adapted to hold the panel and leaf springs or other biasing members which place the panel under tension.

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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 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 12, 1985
GrantedJune 14, 1988
Term endedJune 14, 2005
Patent numberCA 1237892 A
Classification (IPC)G09F7/16 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedApril 12, 1985Patent grantedJune 14, 1988Term endedJune 14, 2005

Sources & verification

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