Marking pen

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Plural or combined

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Details

D19 51, D19 56, D19 57, D19 43, 1906

Patent

active

D04040694

REFERENCES:
patent: D252691 (1979-08-01), Malm et al.
patent: D291374 (1987-08-01), Korper
patent: D306316 (1990-02-01), Shintani
patent: D355933 (1995-02-01), Collins
patent: D363947 (1995-11-01), Kimura
patent: D394457 (1998-05-01), Izushima
patent: 4600327 (1986-07-01), Guzman
patent: 5338123 (1994-08-01), Obersteller et al.

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