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Background noise compensation in a telephone network

H - Electricity – 04 – M
Patent

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Background noise compensation in a telephone set

H - Electricity – 04 – M
Patent

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Backup battery power supply for microprocessor based telephone

H - Electricity – 04 – M
Patent

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Backup device for a subscriber terminal in a digital...

H - Electricity – 04 – M
Patent

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Balanced current multiplier circuit for a subscriber loop...

H - Electricity – 04 – M
Patent

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Balanced tone application system

H - Electricity – 04 – M
Patent

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Balancing agent console load during automated call processing

H - Electricity – 04 – M
Patent

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Bandwidth sharing and congestion control scheme for an...

H - Electricity – 04 – M
Patent

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Barrier movement operator communications

H - Electricity – 04 – M
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Base for telephone set, for alternative desk and wall mounting

H - Electricity – 04 – M
Patent

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Base plate for telephone set base

H - Electricity – 04 – M
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Baseband local area network using ordinary telephone wiring

H - Electricity – 04 – M
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Baseband local area network using ordinary telephone wiring

H - Electricity – 04 – M
Patent

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Bases for telephones

H - Electricity – 04 – M
Patent

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Battery charging circuit

H - Electricity – 04 – M
Patent

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Battery charging circuit for subscriber carrier equipment

H - Electricity – 04 – M
Patent

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Battery feed circuit

H - Electricity – 04 – M
Patent

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Battery feed circuit

H - Electricity – 04 – M
Patent

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Battery feed circuit

H - Electricity – 04 – M
Patent

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Battery feed circuit for a pair of subscriber lines

H - Electricity – 04 – M
Patent

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