Pen

Details Pen Pen

1975-10-09

1977-12-20

Stearman, Joel

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D1906

Patent

active

D02467232

REFERENCES:
patent: D177560 (1956-05-01), Ensign et al.
patent: D227611 (1973-07-01), Carre
patent: D234471 (1975-03-01), Carre
patent: D240525 (1976-07-01), Defores
patent: B477584 (1976-04-01), Grinberg

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