Marking instrument

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument

Patent

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Details

D19 57, D1906

Patent

active

D02602725

REFERENCES:
patent: D215752 (1969-10-01), Mizutani
patent: D235883 (1975-07-01), Stuetzer
patent: 4183685 (1980-01-01), Hofmann
Visual Systems Co. Inc., Cat. .COPYRGT.1978, p. 160-B, Item No. 7304P.

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