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Expired Canadian patentCanada

Method of manufacturing a cut-up mown-material carpet and roller-based processing machine for carrying out the method

CA 1302715 C · Owner: Grenzebach, Hans · Inventors: Grenzebach, Hans

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

In a method of manufacturing a cut-off mown-material carpet the carpet is advanced through a processing nip 22 between two powered rollers 4 and 5 that rotate in opposite directions and have matching elevations 13 and 14 and depressions 15 and 16 in their surface, buckling the carpet. The carpet is advanced through the nip at different speeds at each surf ace of the carpet.

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 19, 1988
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302715 C
Classification (IPC)A01D82/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 19, 1988Patent grantedJune 9, 1992Term endedJune 9, 2009

Sources & verification

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