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Expired Canadian patentCanada

Integral specimen collection tube and microscope slide device

CA 1307446 C · Owner: Kuntz, David H. · Inventors: Kuntz, David H.; Muller, Louis F.

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure, The unitary device includes a generally tubular container having a generally central specimen collection space communicating with the open upper end of the container, and a microscope slide member below and integral with the container and having transparent flat front and rear walls throughout at least a portion thereof, and a central cavity therebetween communicating with the container space through the the lower end of the container. The container is adapted to serve as a centrifugation tube and a permanent handle for manipulation of the microscope slide member. The back of the device is generally flat and the front and sides of the collection tube are …

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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 September 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 1988
GrantedSeptember 15, 1992
Term endedSeptember 15, 2009
Patent numberCA 1307446 C
Classification (IPC)G01N1/28 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 20, 1988Patent grantedSep 15, 1992Term endedSep 15, 2009

Sources & verification

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