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Expired Canadian patentCanada

Process and apparatus for manufacturing a bundle of tubes applications and penel using said bundle

CA 1316677 C · Owner: Strauss, Horst · Inventors: Strauss, Horst

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

This invention relates to the manufacturing of a monobloc bundle of straight tubes laterally contiguous and fixed together at one or at both ends. The manufacturing process consists of forming a bundle of tubes laterally contiguous but not fixed together, of cutting the bundle perpendicular to the axis of the tubes, and of fixing together the ends of the tubes in the plane of the cut. The bundle of tubes can be used to make the core of a sandwich panel.

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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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 16, 1988
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1316677 C
Classification (IPC)B29C65/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 16, 1988Patent grantedApril 27, 1993Term endedApril 27, 2010

Sources & verification

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