Radius surface trowel
CA 2289146 C · Owner: Ciminise, Salvatore J. · Inventors: Ciminise, Salvatore J.; Jurishica, Luann M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand tool consisting of a flexible blade with a working edge is provided for use with a cementitious material to permit the forming and finishing of columns and other curved surfaces of relatively large radii. A pair of gripping surfaces are formed in the flexible blade, consisting of handles to which handgrips have been attached. To enhance the ability of the user to control the curvature of the working edge, the handgrips are attached to the handles in a manner such that a portion of the handgrip overlies and is supported by the outer lateral portion of the handle. Such an arrangement permits the user to apply force through the handgrips directly to the outer periphery of the flexible …
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 November 8, 1999 and granted January 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2021.
- 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.