04828426 is referenced by 50 patents and cites 13 patents.

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 impressions of patterns, in aligned, regular fashion, for example to form linearly and laterally aligned patterns in the surfaces of sidewalks or driveways.

Title
Device for imprinting surface of fresh concrete
Application Number
7/152828
Publication Number
4828426
Application Date
February 5, 1988
Publication Date
May 9, 1989
Inventor
Robert J LeClair
182-C Woodridge Cres., Nepean, Ontario
CA
Angelo Gil
9 Birchwood Avenue, Nepean, Ontario
CA
Lambert Hendricks
R.R. No. 1, Vars, Ontario
CA
Agent
Burke Robertson
IPC
E01C 23/02
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