Felt pen

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

Patent

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Details

D19 43, D19 51, D19 57

Patent

active

D03691837

REFERENCES:
patent: D286163 (1986-10-01), Shintani
patent: D311550 (1990-10-01), Yazaki
patent: D313245 (1990-12-01), Iwase
patent: D326684 (1992-06-01), Shike et al.
patent: D329661 (1992-09-01), Kimura
patent: D331940 (1992-12-01), Shirai et al.
patent: D332624 (1993-01-01), Hollowood
Dri Mark Products, Inc. Jul. 1969 Advertisement, see circled marker-page center.

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