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Expired Canadian patentCanada

Threaded mounting for extruded pole

CA 1298058 C · Owner: Shewchuk, Peter · Inventors: Shewchuk, Peter

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 pole assembly includes an elongate tubular pole releasably locked or held to a base plate. Spaced apart bores are formed in the tubular pole by forming elongate partial bores and closing same with elongate clamp members. The bores 80 formed are aligned with bores in the base plate to form aligned bore passages each of which houses a spindle. Each spindle is mounted in the tubular pole and a locking device engages each spindle and the base plate to releasably lock the pole to the base plate via the spindles. The assembly has particular utility in the case of an extruded metal pole wherein bores are not readily formed, and additionally overcomes disadvantages associated with the welding of …

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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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
  • 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 15, 1987
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298058 C
Classification (IPC)E04H12/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 15, 1987Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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