Data pen

Details Data pen Data pen

1997-11-06

1998-11-03

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 46, D19 51, D19 56, D14116, D26 38, 1906

Patent

active

D04005791

REFERENCES:
patent: D215042 (1969-08-01), Di Spirito
patent: D230403 (1974-02-01), Englund
patent: D242632 (1976-12-01), McPherson
patent: D323189 (1992-01-01), Tu
patent: D343418 (1994-01-01), Dugelay
patent: D355932 (1995-02-01), Beffa
patent: D364641 (1995-11-01), Osterhout
patent: 1900669 (1933-03-01), Sheaffer et al.
patent: 5065003 (1991-11-01), Wakatsuki
patent: 5617304 (1997-04-01), Huang

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