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Expired Canadian patentCanada

Roof snow scoop device

CA 1056596 A · Owner: Snyder, Wayne M. · Inventors: Snyder, Wayne M.

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 manual snow plow blade has a C-type crosssection, a pair of spaced parallel linear upper and lower edges and a pair of spaced opposite ends. A pair of rings are affixed to corresponding ends of the blade in a manner whereby the rings are in parallel planes perpendicular to the blade and extend beyond the borders of the blade. A planar sheet member is affixed to the rings at the upper edge of the blade. A first pulling device is affixed to the blade intermediate the upper and lower edges on the convex surface thereof for manually pulling the device up the incline of a sloping roof whereby only the rings abut the roof thereby preventing the uprooting of shingles on the roof. A second …

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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 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 19, 1979
Term endedJune 19, 1996
Patent numberCA 1056596 A
Classification (IPC)E01H5/02 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJune 19, 1979Term endedJune 19, 1996

Sources & verification

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