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Ralph Ernest Burt
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Vergennes, VT, US
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last 30 patents
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Patent Grant
Optical liquid level sensor including built-in test circuitry
Patent number
5,880,480
Issue date
Mar 9, 1999
Simmonds Precision Products, Inc.
Sylvester M. Ellinger
G01 - MEASURING TESTING
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Patent Grant
Removable ultrasonic transducer with integral electrical disconnect
Patent number
5,761,955
Issue date
Jun 9, 1998
Simmonds Precision Products, Inc.
Frederick L. Lichtenfels
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Patent Grant
Removable ultrasonic transducer with integral electrical disconnect
Patent number
5,669,262
Issue date
Sep 23, 1997
Simmonds Precision Products, Inc.
Frederick Lloyd Lichtenfels
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL