Expired Canadian patentCanada
Irrigation pipe joint lock
CA 1052413 A · Owner: Clements, Lloyd W. · Inventors: Clements, Lloyd W.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A U-lock has a pair of hinged channel-like arms with flared free ends and a U-shaped spring strap handle connected to the arms and adapted to push them onto and hold them in clamping positions on flanges of irrigation pipe sections.
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 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052413 A
Classification (IPC)F16L23/00 +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.