4. Telegraphy
  5. Systems
  6. Line-clearing and circuit maintenance

Mitsukazu Oyama

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Method of capturing a control channel for calls following an eme

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent

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Radio telephone system having emergency speech control

Telephonic communications – Emergency or alarm communications – Called line or station condition responsive
Patent

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System for regenerating a data from a burst signal which is rece

Telegraphy – Systems – Line-clearing and circuit maintenance
Patent

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Profile ID: LFUS-PAI-P-561778

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