Pencil sharpener

Details Pencil sharpener Pencil sharpener

1999-07-17

2000-01-11

Holtje, Martie K.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 65, 1906

Patent

active

D04188748

REFERENCES:
patent: D251977 (1979-05-01), Leuenberger et al.
patent: D297438 (1988-08-01), Evenson
patent: D335308 (1993-05-01), Shapiro et al.
patent: D383165 (1997-09-01), Gstalder
patent: D387091 (1997-12-01), Anderson
patent: 1479921 (1924-01-01), Miller
patent: 2642044 (1953-06-01), Mussguller
patent: 4248283 (1981-02-01), Kaye

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