Dual Gebruder Steidinger

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4341930 Electrodynamic loudspeakerExpiredMar 14, 80Jul 27, 82[H04R]
4320494 Switch device for a turntableExpiredMar 12, 79Mar 16, 82[G11B]
4303954 Control device for a tape recorderExpiredMar 06, 80Dec 01, 81[G11B]
4274082 Transmission system for the digital control of devicesExpiredSep 28, 79Jun 16, 81[H04Q]
4250527 Switching device for cassette tape recordersExpiredJun 22, 79Feb 10, 81[G11B]
4247976 Method for production of a turntable with stroboscope marksExpiredDec 22, 78Feb 03, 81[G11B, B22D]
4198058 Pick-up with exchangeable stylusExpiredAug 21, 78Apr 15, 80[G11B]

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