Writing instrument

Details Writing instrument Writing instrument

1990-08-27

1992-08-25

Walsh, Donald P.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 46, D19 51, D19 56

Patent

active

D03289184

REFERENCES:
patent: D128391 (1941-07-01), Christenson
patent: D144534 (1946-04-01), Beckstrom
patent: D160436 (1950-10-01), Seibert
patent: D172929 (1954-08-01), Kahla
patent: D191554 (1961-10-01), Bodor
patent: D251123 (1979-02-01), Horntrich
patent: D253595 (1979-12-01), Vong
patent: D265740 (1982-08-01), Pook
patent: D286163 (1986-10-01), Shintani
patent: D286549 (1986-11-01), Erlendson
patent: 3358309 (1967-12-01), Richardson
patent: 4167347 (1979-09-01), Hoyle
patent: 4167735 (1979-09-01), Harris
patent: 4825853 (1988-05-01), Iwamoto

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