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John I. Upshur
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Germantown, MD, US
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last 30 patents
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Patent Grant
Asymmetric response bandpass filter having resonators with minimum...
Patent number
6,337,610
Issue date
Jan 8, 2002
Comsat Corporation
Albert Edward Williams
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Low noise front-end blanking and interleaving for satellite recepti...
Patent number
5,889,821
Issue date
Mar 30, 1999
Comsat Corporation
Donald S. Arnstein
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Low loss 360 degree X-band analog phase shifter
Patent number
5,119,050
Issue date
Jun 2, 1992
John I. Upshur
H01 - BASIC ELECTRIC ELEMENTS