Inventor
HELM JIM E
US4 patents
Patents
4 patentsUS6157834ADec 5, 2000
Terrestrial and satellite cellular network interoperability
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US6684056B1Jan 27, 2004
System for providing optimal satellite communication via a MEO/LEO satellite constellation
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US5794120AAug 11, 1998
Method and apparatus for default node operation in a multi-nodal communication system
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US6366775B1Apr 2, 2002
Signal acquistion method and apparatus
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