Combined felt-tipped pen and eraser

Details Combined felt-tipped pen and eraser Combined felt-tipped pen and eraser

1989-08-21

1992-10-20

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 43, D19 51, D19 53, D19 57

Patent

active

D03303888

REFERENCES:
patent: D201412 (1965-06-01), DeGroft
patent: D205330 (1966-07-01), Capezzuto
patent: D219317 (1970-11-01), Hill
patent: D279992 (1985-08-01), Gribb
patent: D295878 (1988-05-01), Lovell
patent: D310249 (1990-08-01), La Londe
patent: 722160 (1903-03-01), Steiger
patent: 3941488 (1976-03-01), Maxwell
patent: 4557618 (1985-12-01), Iwata et al.
patent: 4872777 (1989-10-01), Dalbke

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