Patents
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C09 - Dyes; Paints; Polishes; Natural resins; Adhesives; Compositions not otherwise provided for; Applications of materials not otherwise provided for
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C09D - Coating compositions, e.g. paints, varnishes or lacquers; Filling pastes; Chemical paint or ink removers; Inks; Correcting fluids; Woodstains; Pastes or solids for colouring or printing; Use of materials therefor
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C09D 13 - Pencil-leads; Crayon compositions; Chalk compositions
Patents for C09D 13 - Pencil-leads; Crayon compositions; Chalk compositions (802)
05/1976
05/18/1976
US3957408
Automated molding machine
01/1976
01/20/1976
US3933708
Crayon wax composition
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