Ball-operated control device for electronic circuits

Details Ball-operated control device for electronic circuits Ball-operated control device for electronic circuits

1991-11-13

1993-10-26

Burke, Wallace R.

Equipment for production, distribution, or transformation of ene

Distribution, modification or control

Switch or casing therefor

D14107

Patent

active

D03406962

REFERENCES:
patent: D272921 (1984-03-01), Kim
patent: 1249068 (1917-12-01), Gramm
patent: 3643148 (1972-02-01), Brown et al.
patent: 5078019 (1992-01-01), Aoki
Trackball controls on p. 17 of Measurement Systems, Inc. catalog C584, Oct. 18, 1984.
Trackball controls on p. 18 of Measurement Systems, Inc. catalog C584, Oct. 18, 1984.

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