SEAVEY ENGINEERING ASSOCIATES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7170463 Broadband omnidirectional array antenna systemExpiredMay 31, 05Jan 30, 07[H01Q]
6545649 Low backlobe variable pitch quadrifilar helix antenna system for mobile satellite applicationsExpiredOct 31, 01Apr 08, 03[H01Q]
6043788 Low earth orbit earth station antennaExpiredJul 31, 98Mar 28, 00[H01Q]
5099249 Microstrip antenna for vehicular satellite communicationsExpiredOct 13, 87Mar 24, 92[H01Q]
4740795 Dual frequency antenna feeding with coincident phase centersExpiredMay 28, 86Apr 26, 88[H01Q]
4636798 Microwave lens for beam broadening with antenna feedsExpiredMay 29, 84Jan 13, 87[H01Q]
4504836 Antenna feeding with selectively controlled polarizationExpiredJun 01, 82Mar 12, 85[H01Q]

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