CBS Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4689032 Water toyExpiredNov 29, 85Aug 25, 87[A63H, B63B]
4670784 Methods for coping with non-uniform phosphor aging in dual mode television receiversExpiredJul 07, 86Jun 02, 87[H04N]
4622878 Stereophonic system for electronic organsExpiredApr 18, 85Nov 18, 86[G10H, H04R]
4605950 Two channel compatible high definition television broadcast systemExpiredSep 20, 83Aug 12, 86[H04N]
4602545 Digital signal generator for musical notesExpiredJan 24, 85Jul 29, 86[G10H, G06F]
4570250 Optical sound-reproducing apparatusExpiredMay 18, 83Feb 11, 86[G11B]
4516257 Triphonic sound systemExpiredApr 05, 84May 07, 85[H04H]
4501424 Manual controller for video systemExpiredJun 17, 83Feb 26, 85[A63F, H01H]
4485457 Memory system including RAM and page switchable ROMExpiredMay 31, 83Nov 27, 84[G06F]
4410914 Television picture stabilizing systemExpiredFeb 01, 82Oct 18, 83[H04N]
4406205 Musical instrument lid safety lockExpiredJan 04, 82Sep 27, 83[G10C]
4406923 Automatic loudness controllerExpiredOct 28, 81Sep 27, 83[G01H]
4403256 Television picture stabilizing systemExpiredNov 10, 81Sep 06, 83[H04N]
4397210 Rhythm sound generatorExpiredDec 11, 81Aug 09, 83[G10H]
4359768 Vertical tracking angle meterExpiredApr 06, 81Nov 16, 82[G11B]
4356755 Organ stop control panelExpiredJan 11, 80Nov 02, 82[G09B, G10B]
4356507 Method and apparatus for digital television error correction without overhead bitsExpiredDec 29, 80Oct 26, 82[H04N]
4347405 Sound reproducing systems utilizing acoustic processing unitExpiredAug 15, 80Aug 31, 82[H04S]
4308422 Circuit for modulating a musical tone signal to produce a rotating effectExpiredDec 26, 79Dec 29, 81[G10H]
4308428 System for electronically simulating radiation effects produced by a rotary loudspeakerExpiredDec 26, 79Dec 29, 81[G10H]

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