Pencil sharpener

Details Pencil sharpener Pencil sharpener

1996-02-08

1997-09-02

Thompson, Martie

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 95, 1906

Patent

active

D03831655

REFERENCES:
patent: D143532 (1946-01-01), Hoffman
patent: D251977 (1979-05-01), Leuenberger et al.
patent: D333839 (1993-03-01), Kiyokane
patent: 1494988 (1924-05-01), Boyd
patent: 2504194 (1950-04-01), Harrington
patent: 2895452 (1959-07-01), Angeloff

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