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Expired Canadian patentCanada

Device for imprinting surface of fresh concrete

CA 1302115 C · Owner: Leclair, Robert J. · Inventors: Leclair, Robert J.; Gil, Angelo; Hendriks, Lambert

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 device for manually repetitively imprinting a surface, pattern in fresh concrete comprising: a plurality of blades, secured together to form an imprinting unit lower edges thereof to, form the desired pattern when pressed into the levelled surface of fresh concrete; bar handle means to be secured transversely to upper portions of the blades and to extend laterally beyond the perimeter of the imprinting unit to facilitate manual operation of the device; and levelling means secured to and cooperating with the handle means for adjustably vertically positioning the blades of the device with respect to the surface to be imprinted. This device is practical for multiple, fast repetitive …

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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 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 19, 1988
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302115 C
Classification (IPC)E04F21/16 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 19, 1988Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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