Combined barrel tip assembly and point unit for a writing instru

Details Combined barrel tip assembly and point unit for a writing instru Combined barrel tip assembly and point unit for a writing instru

1986-04-21

1989-07-25

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Element or attachment

Patent

active

D03024423

REFERENCES:
patent: 116097 (1939-08-01), Parker et al.
patent: 135448 (1943-04-01), Sager
patent: 137860 (1944-05-01), Cloutier
patent: 138032 (1944-06-01), Severy
patent: 141297 (1945-05-01), Feig
patent: 188266 (1960-06-01), Bunn et al.
patent: 191078 (1961-08-01), Lovejoy
patent: 2487340 (1949-11-01), Kleinsmith
patent: 2592406 (1952-04-01), Faltin
patent: 2733686 (1956-02-01), Lawton
patent: 3032012 (1962-05-01), Lovejoy
patent: 3352621 (1967-11-01), Fehling et al.

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