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Expired Canadian patentCanada

Apparatus for the production of beams having the shape of a prism or of a truncated pyramid

CA 1267592 C · Owner: Wolf Systembau Gesellschaft M.B.H. Kg. · Inventors: Wolf, Johann

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An apparatus is disclosed for the production of prismatic or truncated-pyramid-shaped beams from boles by edging the latter with the aid of at least two machining tools wherein a relative movement is generated between the bole to be machined and the machining tools . In order to be able to manufacture conical beams, the machining tools are adjustable during edging transversely to the direction of the longitudinal extension of the bole the result, being a linear relative motion of the machining tools inclined under an acute angle with respect to the axis of the bole.

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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 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 28, 1986
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267592 C
Classification (IPC)B27B1/00 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedOct 28, 1986Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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