Josephus J. A. Geboers

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Electronic telephone set

Telephonic communications – Supervisory or control line signaling – Substation originated
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Transmission circuit for a DTMF-telephone set

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Transmission circuit for an electronic telephone set

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Voltage stabilizer suitable for a telephone set

Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
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Voltage stabilizer suitable for use in a telephone set

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Profile ID: LFUS-PAI-P-281699

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