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Expired Canadian patentCanada

Ground covering of interconnecting adjacently disposed plates

CA 1067738 A · Owner: Soland, Bruno · Inventors: Soland, Bruno

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 ground covering with adjacently disposed plates clamped to one another by means of tensioning elements extending essentially parallel to the plates and through the plates. Positive locking elements are provided between neighboring plates interlocking the same preventing movement of one relative to another in a direction transversely to the plane of the plates. The positive locking elements are spacers having outwardly directed domed or arched impact or contact surfaces projecting into sockets in the narrow sides of the plates. The width of the outwardly directed arched impact surfaces measured in a plane parallel, to a plane containing the plates is smaller than the spacing between the …

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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 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedDecember 11, 1979
Term endedDecember 11, 1996
Patent numberCA 1067738 A
Classification (IPC)E01C5/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedDec 11, 1979Term endedDec 11, 1996

Sources & verification

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