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Expired Canadian patentCanada

Die-stamped circuit board assembly for photoflash devices and method of making

CA 1160756 A · Owner: Gte Products Corporation · Inventors: Brower, Boyd G.; Broadt, David R.; Shaffer, John W.

CIPO record

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

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Abstract From the Canadian patent

A circuit board assembly and method of making wherein the assembly includes a dielectric substrate at least one radiation, sensitive switch and at least one conductive member in electrical contact with the switch. Portions of the switch and the conductive member are die-stamped into the dielectric substrate to achieve the contact without severing the switch material.

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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 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 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.
FiledMarch 16, 1981
GrantedJanuary 17, 1984
Term endedJanuary 17, 2001
Patent numberCA 1160756 A
Classification (IPC)B23B31/18 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedMarch 16, 1981Patent grantedJan 17, 1984Term endedJan 17, 2001

Sources & verification

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