4. Electrical audio signal processing systems and devices
  5. Binaural and stereophonic
  6. Quadrasonic

Koppel & Jacobs

Law Firm

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Adaptive operational amplifier offset voltage trimming system

Amplifiers – With periodic switching input-output
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Adaptive-load inverters and methods

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
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Adaptively aligned optical correlator and method

Image analysis – Pattern recognition – Template matching
Reexamination Certificate

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Adjustable multi-nozzle rotating hydrotherapy jet system

Baths – closets – sinks – and spittoons – Tubs – Means for agitating or circulating water in a tub
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Airless reversible spray tip

Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Reexamination Certificate

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