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Expired Canadian patentCanada

Exposure device

CA 1215570 A · Owner: Hoechst Aktiengesellschaft · Inventors: Schoen, Klaus-Peter; Schmitt, Klaus

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

Disclosed is an exposure device which is mounted on a base and includes two exposure lamp arrangements with shutters as well as a movable, mounting support and a stationary mounting support. The movable mounting support is adapted for being displaced between side walls by means of two compressed air cylinders. Positioning elements which are swivelled upward, have end faces which contact stop faces at the back of a frame of the movable mounting support, when the positioning elements adopt a horizontal position. A motor is provided for driving drive rollers. Positioning pins which are engaged by springs are extended by the action of compressed air cylinders in, order to adjust masters …

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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 December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
  • 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 14, 1983
GrantedDecember 23, 1986
Term endedDecember 23, 2003
Patent numberCA 1215570 A
Classification (IPC)G03B27/20 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedNov 14, 1983Patent grantedDec 23, 1986Term endedDec 23, 2003

Sources & verification

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