Pencil sharpener

Details Pencil sharpener Pencil sharpener

1993-07-12

1995-01-31

Thompson, Martie

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

Patent

active

D03549879

REFERENCES:
patent: D298340 (1988-11-01), Yuen
patent: D320812 (1991-10-01), Yuen
patent: 2359093 (1944-09-01), Eastman
patent: 2504194 (1950-04-01), Harrington
patent: 2614534 (1952-10-01), Rocks

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