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Ralph G. Douglass
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Bensalem, PA, US
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last 30 patents
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Patent Grant
Tuned signal detector for use with a radio frequency receiver
Patent number
5,510,859
Issue date
Apr 23, 1996
Information Resources, Inc.
Ralph G. Douglass
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Tuned signal detector for use with a radio frequency receiver
Patent number
5,404,161
Issue date
Apr 4, 1995
Information Resources, Inc.
Ralph G. Douglass
H04 - ELECTRIC COMMUNICATION TECHNIQUE