Pen with automatic light system

Details Pen with automatic light system Pen with automatic light system

1985-10-22

1989-06-06

Feifer, Melvin B.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

Patent

active

D03014860

REFERENCES:
patent: D179706 (1957-02-01), Schwartz
patent: 2607883 (1952-08-01), Berkowitz
patent: 4518274 (1985-05-01), Hanggi

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