Method and apparatus for construction of artificial roads
CA 1285166 C · Owner: Pouyer, Joseph E. · Inventors: Pouyer, Joseph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A temporary road is provided which includes a plurality of sets each defined by a first and second matrices which include an upper surface for supporting heavy vehicles and the like over rough or impassable terrain and a second matrices which comprises support members for the upper or first matrices. Thus one set, is laid down such that the first matrices is in a top or upper position and cross members of the second matrices support the top member or upper matrices and thereafter a second set is positioned such that the first matrices is on the ground or in mud or the impassable surface is such that the second matrices or bottom of the second set wish its spaced cross-support members …
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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 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.