Writing instrument

Details Writing instrument Writing instrument

1991-01-25

1993-05-04

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 49, D19 51, D19 56

Patent

active

D03353060

REFERENCES:
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patent: 4601598 (1986-07-01), Schwartz et al.
patent: 4932800 (1990-06-01), Lin et al.
Photograph of commercial pen, date prior to the filing date of the instant application.
Photograph of Commercial pen, date prior to the filing date of the instant application.
Photograph of pen, date Oct. 1988.

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