Eraser holder

Details Eraser holder Eraser holder

1989-03-28

1991-12-10

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Eraser

D19 48, D19 56, D19 65

Patent

active

D03222829

REFERENCES:
patent: D146481 (1947-03-01), Manheimer
patent: 172867 (1876-02-01), Cleveland
patent: D303992 (1989-10-01), Grotsch
patent: 575275 (1897-01-01), Ress
patent: 1018288 (1912-02-01), Yelf
patent: 2071747 (1937-02-01), Houlihan
patent: 2314777 (1943-03-01), Farrington
patent: 2501612 (1950-03-01), Nielsen
patent: 3093112 (1963-06-01), Shurcliff
patent: 3989392 (1976-11-01), Siedler
patent: 4500221 (1985-02-01), Emerson

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