ANTENNA PRODUCTS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6057806 Cross-polarized around-tower cellular antenna systemsExpiredJun 19, 98May 02, 00[H01Q]
6046704 Stamp-and-bend double-tuned radiating elements and antennasExpiredJan 06, 99Apr 04, 00[H01Q]
5929822 Low intermodulation electromagnetic feed cellular antennasExpiredJun 17, 97Jul 27, 99[H01Q]
5917457 U-dipole radiating elements and antennasExpiredFeb 21, 97Jun 29, 99[H01Q]
5909195 Antennas employing U-dipole elementsExpiredFeb 21, 97Jun 01, 99[H01Q]
5907816 High gain antenna systems for cellular useExpiredJun 24, 97May 25, 99[H04B]
5872544 Cellular antennas with improved front-to-back performanceExpiredFeb 04, 97Feb 16, 99[H01Q]
5872548 Space/angle diversity configurations for cellular antennasExpiredFeb 04, 97Feb 16, 99[H01Q]
5742258 Low intermodulation electromagnetic feed cellular antennasExpiredAug 22, 95Apr 21, 98[H01Q]
5691729 Aperture-to-receiver gain equalization in multi-beam receiving systemsExpiredNov 04, 96Nov 25, 97[G01S]
5684491 High gain antenna systems for cellular useExpiredJan 27, 95Nov 04, 97[H01Q]
5684794 Validation of subscriber signals in a cellular radio networkExpiredJan 25, 96Nov 04, 97[H04Q, H04B]
5625369 Graphic-display panel antennasExpiredFeb 28, 94Apr 29, 97[H01Q]
5606333 Low wind resistance antennas using cylindrical radiating and reflector unitsExpiredFeb 17, 95Feb 25, 97[H01Q]
5596337 Slot array antennasExpiredAug 16, 95Jan 21, 97[H01Q]
5581260 Angular diversity/spaced diversity cellular antennas and methodsExpiredJan 27, 95Dec 03, 96[H01Q]

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