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Expired Canadian patentCanada

Electromechanical survey vehicle and method

CA 1113710 A · Owner: Watts, Robert G. · Inventors: Watts, Robert G.

CIPO record

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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 method and vehicle are disclosed for surveying terrain by providing data from which threedimensional coordinates of the path of the vehicle on the terrain are calculated. The vehicle includes two members articulated to one another and each member is supported on the surface by at least one wheel. The vehicle is positioned and the initial three-dimensional coordinates of a specific point on the first member and the initial orientation of the first member are determined from conventional surveying data. The vehicle is then moved a predetermined distance so that the second member tracks the first member. When the second member is located and oriented in approximately the initial position 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 December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 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.
FiledNovember 16, 1978
GrantedDecember 8, 1981
Term endedDecember 8, 1998
Patent numberCA 1113710 A
Classification (IPC)G01B3/12

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedNov 16, 1978Patent grantedDec 8, 1981Term endedDec 8, 1998

Sources & verification

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