Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument
Patent
1990-10-23
1992-11-17
Holtje, Nelson C.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Marking instrument
D19 51, D19 56, D19 57, D19 54
Patent
active
D03310701
REFERENCES:
patent: D282378 (1986-01-01), Ohyabu et al.
patent: D295537 (1988-05-01), Davidson et al.
patent: D309913 (1990-08-01), Shintani
patent: D312096 (1990-11-01), Vitrac
patent: D318294 (1991-07-01), Cho-Kai
patent: D324879 (1992-03-01), Morgan
patent: 4183685 (1980-01-01), Hofmann et al.
patent: 5033895 (1991-07-01), Aida
Holtje Nelson C.
Pro Eton Corporation
Thompson Martha
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