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Expired Canadian patentCanada

Nestable vegetable cooking pans and cover

CA 1103946 A · Owner: Dart Industries Inc. · Inventors: Zinkgraf, Robert C.; Spoeth, Carl R. Jr.

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

First, second and third pans of progressively decreasing outside diameters and depths are provided with first second, and third covers. The geometry of each pan and its associated cover is such that the cover can be inverted and nested in the open top of the pan, the three pans with their nested inverted covers then being stacked in a vertical array to provide for convenient storage. Handles on the pans are so positioned as to avoid any interference during storage. A fourth pan may be provided received on the bottom of the stack for storage of the complete set.

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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 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledOctober 30, 1978
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1103946 A
Classification (IPC)A47J27/13 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 30, 1978Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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