Trackball for computer system monitor

Details Trackball for computer system monitor Trackball for computer system monitor

1990-04-09

1992-08-04

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03284581

REFERENCES:
patent: D283818 (1986-05-01), Skaggs
patent: D288930 (1987-03-01), Barbera et al.
patent: D291318 (1987-08-01), Kim
patent: D292600 (1987-11-01), Wagner
patent: D304447 (1989-11-01), Adams et al.
patent: D313589 (1991-01-01), Martinelli et al.

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