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Expired Canadian patentCanada

Overlapped document detector

CA 1180787 A · Owner: Magnetic Peripherals Inc. · Inventors: Highbridge, Russell E.; Morgan, Robert S.; Milanes, Eddy J.

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

Disclosed is an overlapped document detector for a document handling apparatus which comprises an air knife in the primary document path to separate overlapped documents and forward them along separate ones of two secondary paths. Optical detectors focused on each secondary path detects, documents to detect an overlapped condition. Vacuum means maintains the documents in their respective secondary paths for detection purposes.

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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 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 7, 1982
GrantedJanuary 8, 1985
Term endedJanuary 8, 2002
Patent numberCA 1180787 A
Classification (IPC)B65H7/12 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMay 7, 1982Patent grantedJan 8, 1985Term endedJan 8, 2002

Sources & verification

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