Method and apparatus for producing a flat surface structure
CA 1069284 A · Owner: Sulzer Brothers Limited · Inventors: Bula, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and apparatus for, producing a, substantially flat surface structure from strand-like material wherein at least one strand is wound upon at least one drum to form a lap or coil at least partially wrapped about said drum and consisting of juxtapositioned strands. Neighboring strands of the lap are interconnected at locations distributed over the periphery of such lap.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.