Optical trackball

Details Optical trackball Optical trackball

1998-05-08

1999-06-08

Tung, M. H.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

1402

Patent

active

D04106385

REFERENCES:
patent: D354746 (1995-01-01), Colani et al.
patent: D386484 (1997-11-01), Jensen et al.
patent: D390210 (1998-02-01), Bickford et al.
patent: D396034 (1998-07-01), Whiteing
patent: 5576733 (1996-11-01), Lo

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