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Head amplifier

Amplifiers – With semiconductor amplifying device – Including signal feedback means
Patent

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Hearing aid

Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent

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Hearing aid device

Amplifiers – Modulator-demodulator-type amplifier
Patent

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Hearing aid malfunction detection system

Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent

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HEMT-HBT cascode distributed amplifier

Amplifiers – With distributed parameter-type coupling means – Distributed amplifier
Patent

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HEMT-HBT doherty microwave amplifier

Amplifiers – With semiconductor amplifying device – Including plural amplifier channels
Reexamination Certificate

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Heterojunction bipolar transistor optoelectronic...

Amplifiers – With semiconductor amplifying device – Including atomic particle or radiant energy impinging on a...
Reexamination Certificate

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Heterolithic microwave integrated impedance matching circuitry a

Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Patent

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Heterostructure bipolar transistor power amplifier module...

Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate

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HF Amplifier circuit

Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent

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HF amplifier with switchable gain

Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate

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HF-amplifier circuit

Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent

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Hierarchical current amplifier

Amplifiers – With semiconductor amplifying device – Including current mirror amplifier
Patent

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High accuracy current source and high accuracy transconductance

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent

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High accuracy differential output stage

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent

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High accuracy, high impedance differential to single-ended curre

Amplifiers – With semiconductor amplifying device – Including current mirror amplifier
Patent

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High back-EMF high pressure subwoofer having small volume...

Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Reexamination Certificate

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High bandwidth and wide dynamic range preamplifier with high...

Amplifiers – Signal feedback – Variable impedance in feedback path varied by separate...
Reexamination Certificate

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High bandwidth apparatus and method for generating...

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate

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High bandwidth apparatus and method for generating...

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate

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