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Expired Canadian patentCanada

Rotary cutting cylinder and method of making same

CA 1290930 C · Owner: Rosemann, Thomas J. · Inventors: Rosemann, Thomas J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A rotary cutting cylinder comprising a generally cylindrical central section, the central section having a plurality of longitudinally spaced grooves and at least, one longitudinal slot having opposing sidewalls crossing the grooves. A cutting rule and mounting bar are positioned in the slot. The mounting bar has a plurality of set serews aligned with the grooves in the cylinder so that a tool can be inserted in the grooves to operate the set screws to urge the cutting rule and mounting bar against opposite walls of the slot to engage the eutting rule in the slot.

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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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 18, 1987
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290930 C
Classification (IPC)B26D7/26 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 18, 1987Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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