Pen

Details Pen Pen

1992-04-15

1994-01-18

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 48, D19 56

Patent

active

D03434184

REFERENCES:
patent: D096022 (1935-06-01), Cuthbert
patent: D138544 (1944-08-01), Rohrer
patent: D159095 (1950-06-01), Peterson et al.
patent: D181244 (1957-10-01), Zierhut
patent: D182162 (1958-02-01), Carreison
patent: D215042 (1969-08-01), DiSpirito
patent: D251465 (1980-10-01), Zierhut
patent: D332637 (1993-01-01), Hesse

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