Plural-nibbed ball-point pen

Details Plural-nibbed ball-point pen Plural-nibbed ball-point pen

1991-09-06

1993-04-06

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 48, D19 56, D19 51

Patent

active

D03345890

REFERENCES:
patent: D133540 (1942-08-01), Kahn
patent: D143508 (1946-01-01), Reynolds
patent: D155285 (1949-09-01), Green et al.
patent: D174249 (1955-03-01), Daniels
patent: D306316 (1990-02-01), Shintani
patent: D306458 (1990-03-01), Lecce
patent: D312478 (1990-11-01), Lecce
patent: D328917 (1992-08-01), Shike et al.
patent: 2883968 (1959-04-01), Vertiz
patent: 3288116 (1966-11-01), Poritz
patent: 4266881 (1981-05-01), Rubens

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