Writing instrument

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

Patent

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Details

D19 47, D19 51

Patent

active

D03593070

REFERENCES:
patent: D7747 (1874-09-01), Gerow
patent: D31072 (1899-06-01), Tucker
patent: D42553 (1912-05-01), Tolfree
patent: D95135 (1935-04-01), Huber
patent: D229357 (1973-11-01), Defores
patent: D330725 (1992-11-01), Samuel
patent: 5228794 (1993-07-01), Hochsteter

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