4. Telephonic communications
  5. Subscriber line or transmission line interface

Valentin Purits

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Low power dialer

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Reexamination Certificate

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Reset circuit for generating reset pulse over an interval of red

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent

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Ring discriminator

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Patent

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Series equipment with DC line hold transfer

Telephonic communications – Subscriber line or transmission line interface
Patent

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Profile ID: LFUS-PAI-P-532993

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