Floor grating
CA 2000004 C · Owner: Berndt, Fred P. Jr. · Inventors: Berndt, Fred P. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Of The Disclosure A floor grating assembly is disclosed, which comprises tread rails arranged in closely spaced parallel relation and held by spacer bars. The spacer bars which, are notched, are inserted in alignment openings of preferrably triangular shape in the tread rails. After insertion, the spacer bars are rotationally reoriented to a position securing the tread rails in spaced apart relation. Flange means extending along the lower edges of the spacer bars are locally deformable into locking notches formed in the alignment openings. The spacer bars are thus locked against rotation out of their operative positions. Manufacturing economies and structural improvements are …
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 October 2, 1989 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 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.