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Expired Canadian patentCanada

Wayside oriented moving block

CA 1094672 A · Owner: General Signal Corporation · Inventors: Auer, John H. Jr.; Svet, Frank A. Jr.

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 control system including apparatus for the transmission of information for the control of vehicles travelling in one direction on a guideway. The guideway is broken down into a plurality of groups of uniquely identified sequential blocks. Each block has at least one vehicle detector for detecting the presence of a vehicle and having an operated condition responsive to vehicle detection. Each block further includes a transmitter for providing to a, vehicle within the block, information concerning the block it is in as well as information regarding the indentity of the next downstream occupied or unavailable block. To this end, each block has associated with it a word generator for …

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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 January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 28, 1978
GrantedJanuary 27, 1981
Term endedJanuary 27, 1998
Patent numberCA 1094672 A
Classification (IPC)B61L3/20 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 28, 1978Patent grantedJan 27, 1981Term endedJan 27, 1998

Sources & verification

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