Expired Canadian patentCanada
Antipilferage systems
CA 1295030 C · Owner: Crossfield, Michael D. · Inventors: Crossfield, Michael 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
An antipilferage system for the detection of magnetic tags comprise an assembly of spirally wound emitter and/or detector coils. This arrangement enables a tag to be detected regardless of its orientation.
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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 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 21, 1989
GrantedJanuary 28, 1992
Term endedJanuary 28, 2009
Patent numberCA 1295030 C
Classification (IPC)G08B13/24 +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.