Marking pen

Details Marking pen Marking pen

1990-08-20

1992-07-14

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 48, D19 57

Patent

active

D03279120

REFERENCES:
patent: D158051 (1950-04-01), Compas
patent: D321720 (1991-11-01), Sakurada
patent: 2100157 (1937-11-01), Chandler
patent: 2377117 (1945-05-01), Watkins
patent: 2726760 (1955-12-01), Dulberg
patent: 2865334 (1958-12-01), Radzinsky
patent: 3203025 (1965-08-01), Schreur
patent: 3464775 (1969-09-01), Beal
patent: 5026189 (1991-06-01), Keil

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