Marking pen

Details Marking pen Marking pen

1979-06-11

1981-10-27

Word, George P.

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

D19 49, D19 51, D19 56, D1906

Patent

active

D02615312

REFERENCES:
patent: D83592 (1931-03-01), Bienenstein
patent: D88299 (1932-11-01), Kahn
patent: D155806 (1949-11-01), Kahn
patent: D162213 (1951-02-01), Nelson et al.
patent: D252934 (1979-09-01), Carre

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