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Expired Canadian patentCanada

Joint connection

CA 1284572 C · Owner: Zemler, Willibald · Inventors: Hofstatter, Peter; Zemler, Willibald; Raunicher, Albert P.

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

The metal casing of a joint connection having a plurality of rods combined to form a joint and which protrude through openings in a metal casing that is filled with hardenable filler material, has projections that taper down especially in steps.

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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 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 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.
FiledJanuary 13, 1987
GrantedJune 4, 1991
Term endedJune 4, 2008
Patent numberCA 1284572 C
Classification (IPC)E04B1/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 13, 1987Patent grantedJune 4, 1991Term endedJune 4, 2008

Sources & verification

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