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Expired Canadian patentCanada

Liquid containment and storage system for railroad track and method

CA 1136868 A · Owner: True Temper Railway Appliances, Inc. · Inventors: Curati, Marino, Jr.

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Abstract From the Canadian patent

Abstract of the Disclosure A containment and storage system for liquids such as, petroleum based liquids, for use for instance in a railroad track environment, comprising a walled containment reservoir formed in the ground and opening upwardly, with the containment reservoir including a flexible impervious liner to prevent escape of liquid through the liner from the containment space and a receiving or, storage reservoir disposed in spaced relation to the containment reservoir and means coacting between the reservoirs for transferring liquid caught in the containment reservoir to the storage, reservoir. In one embodiment a mechanical pump is utilized for, transferring to the storage …

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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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1980
GrantedDecember 7, 1982
Term endedDecember 7, 1999
Patent numberCA 1136868 A
Classification (IPC)E01F5/00 +2 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJune 17, 1980Patent grantedDec 7, 1982Term endedDec 7, 1999

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