Apparatus and method for polishing a plumbing or electrical fixture
CA 2002771 A1 · Owner: Lewy, Michael M. · Inventors: Lewy, Michael M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for polishing a metallic plumbing or electrical fixture, such as a pipe pipe, fitting or electrical bus bar, is provided. The apparatus includes container means for retaining an electrolytic solution and a cathode member. The member is specially designed to accommodate a plumbing fixture having a circular cross-section or an elongate electrical fixture, and is at least partially immersed within the solution. The apparatus also includes dc power supply means having a negative terminal which is, connected to the cathode member and a positive, terminal which is connected to a clamp means. The clamp means is capable of forming an electrical connection with the fixture to …
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 10, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2011.
- 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.