Roofing material carrier
CA 2038166 C · Owner: Oleksiuk, Peter · Inventors: Oleksiuk, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This device is for supporting roofing material such as shingles, shakes and the like, upon the roof deck to facilitate the installation thereof. It consists of a planar support plate for a bundle of shingles or the like ahead of, the roofer and upon the usually upwardly sloping roof deck. It is supported by two sets of castor wheels on the underside of the deck so that it can be moved readily and easily upwardly, sideways or at any angle therebetween. A pair of deck engaging grippers extend rearwardly and downwardly from the front or lower edge of the plate, to prevent downward movement of the assembly. When engaging the deck surface these are endpointed to engage the deck. When adjacent a …
Read the whole patent
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
- Filed March 13, 1991 and granted December 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.