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Expired Canadian patentCanada

Crane apparatus

CA 1072497 A · Owner: Stock Equipment Company · Inventors: Christofer, Donald E.; Stock, Arthur J.; Brinza, Joseph 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

Systems, apparatus and methods are disclosed for disposing of radioactive waste materials by placing them into a container such as a steel drum, together with cement or other solidifying agent and water or other suitable liquid in amount sufficient to provide eventually a solidified mixture of predetermined amounts of cement or other solidifying agent and radioactive material, closing the drum agitat-, ing the mixture in the drum for mixing the contents and then, storing the drum for at least a period of time sufficient to permit partial decay of radioactive materials or to await available time for shipment. Also disclosed are remotely controlled apparatus for handling both empty and filled …

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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 February 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 1997.
  • 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—
GrantedFebruary 26, 1980
Term endedFebruary 26, 1997
Patent numberCA 1072497 A
Classification (IPC)G21C19/00

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 26, 1980Term endedFeb 26, 1997

Sources & verification

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