Expired Canadian patentCanada
Method of and apparatus for determining the position of a body within the cross-section of an electromagnetic beam
CA 1019046 A · Owner: Short Brothers And Harland Limited · Inventors: Hutchinson, Terence
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
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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.
Why it's free to use
- Granted October 11, 1977. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 1994.
- 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—
GrantedOctober 11, 1977
Term endedOctober 11, 1994
Patent numberCA 1019046 A
Classification (IPC)G02B26/04 +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.