Track ball for computer system cursor control

Details Track ball for computer system cursor control Track ball for computer system cursor control

1991-10-01

1993-05-18

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03356582

REFERENCES:
patent: D272921 (1984-03-01), Kim
patent: D291318 (1987-08-01), Kim
patent: D302426 (1989-07-01), Bradley et al.
patent: D315552 (1991-03-01), Sacherman
patent: D326261 (1992-05-01), Ashmun et al.
patent: 4952919 (1990-08-01), Nippoldt
Softwarehouse catalog item Mouse Systems.RTM. trackball, p. 29, winter '89-'90.

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