Writing instrument clip

Details Writing instrument clip Writing instrument clip

1990-09-10

1992-12-01

Walsh, Donald P.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Element or attachment

D19 42, D19 51, D19 54

Patent

active

D03314227

REFERENCES:
patent: D79546 (1929-10-01), Biffar
patent: D80609 (1930-03-01), Esterow
patent: D102720 (1937-01-01), Larsen
patent: D124725 (1941-01-01), Ornstein
patent: D135890 (1943-06-01), Kahn
patent: D149263 (1948-04-01), Ferber
patent: D173480 (1954-11-01), Fink
patent: D258220 (1981-02-01), Oka
patent: D306317 (1990-02-01), Petterson
patent: D307035 (1990-04-01), Petterson

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