Expired Canadian patentCanada
Football helmet face mask
CA 1258751 A · Owner: Butash, John D. · Inventors: Butash, John D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A football helmet having a face mask formed of a wire frame with a series of beads strung along certain wires to make it difficult for an opposing player to grab the face mask. Each bead is formed such that it can be snapped on its supporting wire.
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 August 29, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 4, 1985
GrantedAugust 29, 1989
Term endedAugust 29, 2006
Patent numberCA 1258751 A
Classification (IPC)A42B1/06 +1 more
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.