Inventor
WALLACE RICHARD H
US5 patents
Patents
5 patentsUS5594925AJan 14, 1997
Method and apparatus determining order and identity of subunits by inputting bit signals during first clock period and reading configuration signals during second clock period
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US5364272ANov 15, 1994
Apparatus and method for teaching
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US5163844ANov 17, 1992
Battery-free electronic teaching apparatus with keypad of piezo film switches
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US5646601AJul 8, 1997
Magnetic apparatus for actuating a reed switch and associated system
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US5324898AJun 28, 1994
Motion detector and associated system
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