4. Telephonic communications
  5. Supervisory or control line signaling
  6. Using line or loop condition detection

Toshihiko Kotaka

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High voltage detection circuit, bell signal detection circuit an

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

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Novel lactase

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Hydrolase
Patent

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Off-hook signal and dial pulse generating circuit and a method f

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission
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Telemetering apparatus

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Reexamination Certificate

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Telemetering apparatus

Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By pulse coincidence
Patent

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Profile ID: LFUS-PAI-P-521416

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