Expired Canadian patentCanada
Shut-down control for welding carriage
CA 1252829 A · Owner: High Steel Structures, Inc. · Inventors: Greineder, Walter M.
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 shut-down control for a welding carriage supporting an arc welding gun automatically shuts down the gun after the carriage has stopped moving along a weld plate for a timing interval but before the continuously welding gun injures the plate.
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 April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 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.
FiledJune 20, 1986
GrantedApril 18, 1989
Term endedApril 18, 2006
Patent numberCA 1252829 A
Classification (IPC)B23K9/12 +2 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.