Writing instrument

Details Writing instrument Writing instrument

1991-12-13

1994-09-13

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56

Patent

active

D03505626

REFERENCES:
patent: D14965 (1884-04-01), Fairchild
patent: D26395 (1896-12-01), Kraus
patent: D81529 (1930-07-01), Davis
patent: D185331 (1959-05-01), Tannenbaum
patent: D253660 (1979-12-01), Carre
patent: D269189 (1983-05-01), Sakaoka
patent: D269445 (1983-06-01), Kruckel et al.
patent: D284777 (1986-07-01), Schwartz et al.
patent: D286164 (1986-10-01), Tinz
patent: D287603 (1987-01-01), Bruhn
patent: D295421 (1988-04-01), Young
patent: D305552 (1990-01-01), Itoh
patent: D306458 (1990-03-01), Lecce
patent: D321719 (1991-11-01), Nitta
patent: D331777 (1992-12-01), Sedlmeier et al.

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