Pencil sharpener and cap

Details Pencil sharpener and cap Pencil sharpener and cap

1997-05-01

1998-08-11

Thompson, Martie

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 36, D19 57, D19 46, 1906

Patent

active

D03968863

REFERENCES:
patent: D144402 (1946-04-01), Libic, Jr.
patent: D146481 (1947-03-01), Manheimer
patent: D149356 (1948-04-01), Jalof
patent: D164548 (1951-09-01), Blish
patent: D177660 (1956-05-01), Blish
patent: D198959 (1964-08-01), Di Fulvio et al.
patent: D202487 (1965-10-01), Bowland
patent: 204169 (1878-05-01), Sellers
patent: D267654 (1983-01-01), Nadel
patent: D300833 (1989-04-01), McShirley
patent: 450378 (1891-04-01), Robinson
patent: 2682123 (1954-06-01), Fredrickson

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