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Expired Canadian patentCanada

Microwave oven construction

CA 1203853 A · Owner: Litton Systems, Inc. · Inventors: Bonner, Howard E.

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 microwave oven construction is disclosed wherein the oven cavity is assembled without the use of structural welds. A pair of pan shaped members, one forming the oven cavity top and the other forming the oven cavity bottom are placed edge to edge and crimped together to form a unitary cavity structure. An oven front panel is crimped to the cavity structure thus formed.

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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 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 10, 1983
GrantedApril 29, 1986
Term endedApril 29, 2003
Patent numberCA 1203853 A
Classification (IPC)H05K5/02 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 10, 1983Patent grantedApril 29, 1986Term endedApril 29, 2003

Sources & verification

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