Writing instrument

Details Writing instrument Writing instrument

1992-07-09

1993-11-23

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

D03416224

REFERENCES:
patent: D230403 (1974-02-01), Englund
patent: D238068 (1975-12-01), Maryynissen
patent: D242792 (1976-12-01), Loftus
patent: D286549 (1986-11-01), Erlendson
patent: D294600 (1988-03-01), Funahashi et al.
patent: D303549 (1989-09-01), Horntrich
patent: D313245 (1990-12-01), Iwase
patent: D324543 (1992-03-01), Poisson
patent: 1598873 (1926-09-01), Peterson
patent: 2594955 (1952-04-01), Markowitz
patent: 4167347 (1979-09-01), Hoyle
patent: 4601598 (1986-07-01), Schwartz et al.

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