Ballpoint pen with oil filled upper part

Details Ballpoint pen with oil filled upper part Ballpoint pen with oil filled upper part

1997-05-19

1999-04-20

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 56, 1906

Patent

active

D04084489

REFERENCES:
patent: D139839 (1944-12-01), Winter
patent: D158973 (1950-06-01), Kahn
patent: D178924 (1956-10-01), Kahn
patent: D180621 (1957-07-01), Schoeman
patent: D212866 (1968-12-01), Parraud

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