Felt tip pen

Details Felt tip pen Felt tip pen

1989-04-25

1991-11-19

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56

Patent

active

D03217191

REFERENCES:
patent: D146335 (1947-02-01), Colomy
patent: D149672 (1948-05-01), Phillips
patent: D153905 (1949-05-01), Sager
patent: D160436 (1950-10-01), Seibert
patent: D269189 (1983-05-01), Sakaoka
patent: D284773 (1986-07-01), Schwartz et al.
patent: D286789 (1986-11-01), Thompson et al.
patent: 3963358 (1976-06-01), Houser

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