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Expired Canadian patentCanada

Bunker for surface mines

CA 1285519 C · Owner: Schroder, Gerd · Inventors: Stender, Egon; Schroder, Gerd

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

A bunker system for accommodating and further transporting materials from surface mines includes a bunker device being provided adjacent a terrace wall. The bunker device comprises a platform and an endless conveyor for transporting the material; side walls bounding and together surrounding the platform to form, with the platform an upwardly open, storage area for accommodating and holding the materials. A niche, having niche walls, is provided in the terrace wall. Some of the side walls form part of the bunker device and are disposed on the platform adjacent the endless conveyor and some of the side walls are constituted by the niche walls.

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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 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.
FiledMarch 29, 1988
GrantedJuly 2, 1991
Term endedJuly 2, 2008
Patent numberCA 1285519 C
Classification (IPC)B65G47/18 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 29, 1988Patent grantedJuly 2, 1991Term endedJuly 2, 2008

Sources & verification

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