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Expired Canadian patentCanada

Undercarriage arrangement for normally static articles

CA 1279889 C · Owner: Dooley, Joseph · Inventors: Dooley, Joseph

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

An undercarriage arrangement for normally static articles" An undercarriage arrangement for normally static objects such as work-benches comprises at least one pair of wheels or rollers which are mounted for rotation on at least one support member pivotably mountable on the object. A spring biassing arrangement is provided one end of the, spring being pivotally mounted on the support member and the other end thereof being attached to means mounted on the object. The means may comprise a pivotal lever or projections. In either case, the second end of the spring can be displaced between two or more pre-selected positions with the proviso that at least two of the preselected positions are …

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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 February 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 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.
FiledDecember 17, 1986
GrantedFebruary 5, 1991
Term endedFebruary 5, 2008
Patent numberCA 1279889 C
Classification (IPC)F16M11/20 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 17, 1986Patent grantedFeb 5, 1991Term endedFeb 5, 2008

Sources & verification

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