Pencil sharpener

Details Pencil sharpener Pencil sharpener

1979-07-11

1982-06-08

Kunin, Stephen G.

Bridges

145 35, B43L 2300

Patent

active

043335063

ABSTRACT:
A hand-held pencil sharpener preferably of metal has opposed gripping surfaces formed with longitudinal ridges and recesses which are relatively wider than in conventional sharpeners to avoid their becoming clogged with dirt.

REFERENCES:
patent: 399839 (1889-03-01), Codd
patent: 896100 (1908-08-01), Geraci
patent: 1204959 (1916-11-01), Duncan
patent: 1887422 (1932-11-01), Oulton
patent: 4210185 (1980-07-01), Acevedo

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