Writing instrument

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

Patent

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D19 56

Patent

active

D03420906

REFERENCES:
patent: D144459 (1946-04-01), Iwanowicz
patent: D161826 (1951-02-01), Ferber
patent: D201063 (1965-05-01), Kahn et al.
patent: D304601 (1989-11-01), Alskog
patent: D312478 (1990-11-01), Lecce
patent: D324069 (1992-02-01), Katami

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