Crayon protector

Details Crayon protector Crayon protector

1993-03-16

1996-07-23

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Element or attachment

D19 48, D19 49

Patent

active

D03720497

REFERENCES:
patent: D268935 (1983-05-01), Horntrich
patent: D277873 (1985-03-01), Kin
patent: D290854 (1987-07-01), Appel
patent: D311421 (1990-10-01), Mardock
patent: 1323612 (1919-12-01), Rich
patent: 1428076 (1922-09-01), Clark
patent: 1595948 (1926-08-01), King
patent: 4468146 (1984-08-01), Tabachnik
patent: 4635309 (1987-01-01), Larsen
patent: 4875707 (1989-10-01), Krom
patent: 5002182 (1991-03-01), McGinnis
patent: 5048989 (1991-09-01), Stageman

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