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Expired Canadian patentCanada

Moisture control system

CA 1087029 A · Owner: Addressograph-Multigraph Corporation · Inventors: Mabrouk, Saied A.

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

Case No. 1-750110-G, Inventor: Saied A. Mabrouk Title: MOISTURE CONTROL SYSTEM, ABSTRACT A moisture system is provided for a lithographic duplicator comprising means for controlling the rate at which moisture is supplied to the master as a function of speed of a hydrophilic roll driven by an inkreceptive roll in contact with the master cylinder. The control means also utilize reference signals, indicative of duplicator speed to the, control moisture supply rate.

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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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 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.
FiledApril 27, 1977
GrantedOctober 7, 1980
Term endedOctober 7, 1997
Patent numberCA 1087029 A
Classification (IPC)B41F7/26 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedApril 27, 1977Patent grantedOct 7, 1980Term endedOct 7, 1997

Sources & verification

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