Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-04-13
1995-07-25
Groody, James J.
Communications: electrical
Condition responsive indicating system
Specific condition
345164, G08B 2100
Patent
active
054366160
ABSTRACT:
A pointing device such as a mouse is provided with cleaning time determination circuitry 46, 48, 50 for determining whether the cleaning of its movable portions becomes necessary and the user is notified of the necessity of cleaning by visual indication at indicator 52 when an alarm signal is outputted from the determination circuitry.
REFERENCES:
patent: 4501005 (1985-02-01), Miller
patent: 4881065 (1989-11-01), Soma et al.
Futatsugi Shinji
Shimo Yoshimichi
Uemura Masahiro
Groody James J.
International Business Machines Corp.
McKinley Martin J.
Miller John W.
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