Expired Canadian patentCanada
Circuit testing
CA 1268820 C · Owner: Grant, David Peter · Inventors: Grant, David Peter
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical circuit test meter that includes a detachable meter reading display unit that displays a signal transmitted from the test meter body itself.
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 May 8, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1986
GrantedMay 8, 1990
Term endedMay 8, 2007
Patent numberCA 1268820 C
Classification (IPC)G01R13/00 +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.