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Expired Canadian patentCanada

End plug closures for shirred casing sticks and methods for making them

CA 1055770 A · Owner: Union Carbide Corporation · Inventors: Marbach, Walter V.; Sheridan, Arthur L.

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

Improved end closures for shirred casing sticks and methods for making them which comprise inturning a predetermined amount of a casing material into a forming tube and then compressing the inturned casing material against a fixed surface to form a free floating, semi-floating or fully anchored type flat end plug which when anchored within the fore end of a shirred stick may or may not form an integral part thereof. S P E C I F I C A T I O N, 1.

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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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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—
GrantedJune 5, 1979
Term endedJune 5, 1996
Patent numberCA 1055770 A
Classification (IPC)A22C13/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJune 5, 1979Term endedJune 5, 1996

Sources & verification

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