Four-button trackball

Details Four-button trackball Four-button trackball

1999-07-20

2002-11-26

Tung, M. H. (Department: 2911)

Recording, communication, or information retrieval equipment

Computer, data processor equipment

Peripheral equipment

Design Patent

active

D0466121

CLAIM:
The ornamental design for a four button trackball, as shown and described.

REFERENCES:
patent: D392959 (1998-03-01), Edwards
patent: D402281 (1998-12-01), Ledbetter et al.
patent: D402973 (1998-12-01), Edwards et al.
patent: D409181 (1999-05-01), Edwards et al.
patent: D409991 (1999-05-01), Edwards et al.
patent: D410638 (1999-06-01), Sheehan et al.
patent: D415746 (1999-10-01), Edwards et al.

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