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Expired Canadian patentCanada

Apparatus for cutting paper sheets or the like

CA 1108979 A · Owner: Will (E. C. H.) (G.M.B.H. & Co.) · Inventors: Aykut, Kurt

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

2195-17a, ABSTRACT OF THE DISCLOSURE, Apparatus for cutting paper sheets wherein a first knife, which is freely rotatable on a shaft is movable sideways, toward and away from a driven counterknife. The shaft is reciprocable in a carrier which is connected with one end of a reciprocable and turnable piston rod. The piston rod extends into a cylinder and is reciprocable by a spring and a membrane-like piston. The orientation of the first knife with respect to the counterknife can be changed by turning the piston rod with reference to the cylinder so that the piston rod can assume and is held in any one of several angular positions. To this end, the piston rod is rigidly connected with a …

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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, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.
FiledMay 18, 1979
GrantedSeptember 15, 1981
Term endedSeptember 15, 1998
Patent numberCA 1108979 A
Classification (IPC)B26D1/14 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMay 18, 1979Patent grantedSep 15, 1981Term endedSep 15, 1998

Sources & verification

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