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Expired Canadian patentCanada

Current limiting fuse with resilient fill hole seal

CA 1165352 A · Owner: Westinghouse Electric Corporation · Inventors: Blewitt, Donald D.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

6 48,811, ABSTRACT OF THE DISCLOSURE, A current limiting fuse characterized by a tubular housing having opposite end caps forming a fuse compartment in which a fuse element is disposed which, chamber is filled with sand, a sand inlet opening in one of the end caps, housing and terminals and a resilient plug in the opening.

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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1981
GrantedApril 10, 1984
Term endedApril 10, 2001
Patent numberCA 1165352 A
Classification (IPC)H01H85/18

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedMay 28, 1981Patent grantedApril 10, 1984Term endedApril 10, 2001

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.