4. Telephonic communications
  5. Telephone line or system combined with diverse electrical...
  6. Remote indication over telephone line

Joseph T. Tousignant

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Elastomeric article proximity switch

Electricity: circuit makers and breakers – Solid contact – Membrane type
Patent

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Method of communicating data from remote devices to a central co

Telephonic communications – Telephone line or system combined with diverse electrical... – Remote indication over telephone line
Patent

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Monitoring system for remote devices

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Profile ID: LFUS-PAI-P-1544302

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