Ball-point pen

Details Ball-point pen Ball-point pen

1990-08-08

1992-07-07

Walsh, Donald P.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 51, D19 56, D19 57

Patent

active

D03277070

REFERENCES:
patent: D137660 (1944-04-01), Severy
patent: D140026 (1945-01-01), Schladermundt et al.
patent: D181705 (1957-12-01), Bruce
patent: D182162 (1958-02-01), Carreiro
patent: D208961 (1967-10-01), Bross
patent: D251301 (1979-03-01), Malamoud
patent: D258217 (1981-02-01), Sakaoka
patent: D273876 (1984-05-01), Evenson
patent: D288450 (1987-02-01), Regnault
patent: D306178 (1990-02-01), Lauper

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