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Expired Canadian patentCanada

Connecting sleeve and new pole section for use in a method for replacing an erected utility pole without disturbing hardware mounted thereon

CA 1113675 A · Owner: Interpace Corporation · Inventors: Swanson, Harold V.

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

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Abstract From the Canadian patent

Harold V. Swanson, ABSTRACT OF THE DISCLOSURE This disclosure teaches in combination a connecting sleeve and new pole section connected to each other monolithically for use in a method for replacing an erected utility pole (usually wood), without disturbing hardware mounted thereon. The utility pole includes a proximal section having a bottom end attached to the earth and a distal section having hardware mounted thereon. The distal section (with its hardware intact thereon) is severed from the proximal section. The distal section is connected monolithically to project from the new pole section by inserting and securing the distal section in the connecting sleeve by means of grouting. -1-

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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 December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 24, 1979
GrantedDecember 8, 1981
Term endedDecember 8, 1998
Patent numberCA 1113675 A
Classification (IPC)E04H12/00

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 24, 1979Patent grantedDec 8, 1981Term endedDec 8, 1998

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