Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument
Patent
1994-10-20
1996-04-30
Douglas, Alan P.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Marking instrument
D19 99
Patent
active
D03692671
REFERENCES:
patent: D267911 (1983-02-01), Long et al.
patent: D287070 (1986-12-01), Staubitz et al.
patent: D288214 (1987-02-01), Evenson
patent: 2239840 (1941-04-01), Casey
patent: 4776482 (1988-10-01), Wolters et al.
patent: 4930928 (1990-06-01), Ristuccia, Sr.
Douglas Alan P.
Snapp S.
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