Electric pencil sharpener

Details Electric pencil sharpener Electric pencil sharpener

1997-01-13

1998-07-14

Thompson, Martie

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 65, 1906

Patent

active

D03960625

REFERENCES:
patent: D117901 (1939-12-01), Hoffman
patent: D199473 (1964-10-01), Shueler
patent: D215379 (1969-09-01), Mizuno et al.
patent: D221907 (1971-09-01), Kajiwara
patent: D222188 (1971-10-01), Kajiwara
patent: D237610 (1975-11-01), Macowski
patent: D242258 (1976-11-01), McPherson
patent: D250035 (1978-10-01), Kajiwara
patent: D251008 (1979-02-01), Kajiwara
patent: D265323 (1982-07-01), Macowski
patent: D320812 (1991-10-01), Yuen
patent: D354987 (1995-01-01), Yuen
patent: 2614534 (1952-10-01), Rocks
patent: 3134365 (1964-05-01), Takeo Hori
Office Appliances, p.74, See Pictured Sharpener, bottom of page, Nov. 1966.

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