Grooved pen

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

Patent

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Details

D19 48, D19 51, D19 56, 1906

Patent

active

D03865258

REFERENCES:
patent: D148338 (1948-01-01), Weston
patent: D282753 (1986-02-01), Le Blanc
patent: D333486 (1993-02-01), Rousseau
patent: D340474 (1993-10-01), Visage
patent: D359983 (1995-07-01), Rosenbaum
patent: D362682 (1995-09-01), Pitteloud
patent: D363949 (1995-11-01), Compte
patent: 2857882 (1958-10-01), Forster

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