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Expired Canadian patentCanada

Electrodes for use in the extrusion-fusion welding of lead parts through an aperture

CA 1104643 A · Owner: General Battery Corporation · Inventors: Eberle, William J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The present invention provides a novel electrode construction and application for use in extrusion-fusion type battery intercell welders, which alters the current carrying characteristics of the electrodes and produces a homogeneous weld exhibiting a superior grain structure higher strength, and superior durability.

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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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 22, 1978
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104643 A
Classification (IPC)H01M2/24 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 22, 1978Patent grantedJuly 7, 1981Term endedJuly 7, 1998

Sources & verification

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