4. Electrical audio signal processing systems and devices
  5. Directive circuits for microphones

Alan D. Michel

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Appliance control system providing out-of-context usage

Communications: electrical – Systems – Selsyn type
Patent

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Directional microphone system

Electrical audio signal processing systems and devices – Directive circuits for microphones
Patent

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Long-time balancing of omni microphones

Electrical audio signal processing systems and devices – Directive circuits for microphones
Patent

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Microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Software pay per use system

Cryptography – Cryptanalysis
Patent

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Profile ID: LFUS-PAI-P-284965

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