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Expired Canadian patentCanada

Railroad freight car

CA 1322896 C · Owner: Kampmann, Gerhard · Inventors: Kampmann, Gerhard; Wackermann, Peter; Reemtsema, Karl-Dieter

CIPO record

Overview

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

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Abstract From the Canadian patent

Railroad Freight car The invention relates to a railroad freight car having hoods covering the freight roam which slids over each other and lie in one plane in the closed position. The hoods are liftable swivelable and can be put down on rollers which engage rails by means of an actuation arrangement. The hoods are split at their, apex where they have joints and a sealing element. The railroad freight car is provided with separation walls for securing of a load. The separation walls, are movable on rollers running in rails on the freight floor, on both sides of the center portal in the freight floor and can be arrested at the bottom by releasable pegs in the floor and at the top by means of …

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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 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.
FiledJuly 10, 1989
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1322896 C
Classification (IPC)B61D45/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 10, 1989Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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