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Expired Canadian patentCanada

Scale devices

CA 1256464 A · Owner: Curran, Barry D. · Inventors: Curran, Barry D.

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

A scale device is provided, which can be used in the floor of a truck, trailer or fixed structure in, which it is desired to obtain the weights of various items placed on the floor, and includes one or more retractible pneumatic scale assemblies to selectively engage the items and record their weight and which, includes load responsive members to weigh the items.

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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 June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
  • 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 30, 1985
GrantedJune 27, 1989
Term endedJune 27, 2006
Patent numberCA 1256464 A
Classification (IPC)G01G19/52

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedDec 30, 1985Patent grantedJune 27, 1989Term endedJune 27, 2006

Sources & verification

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