4. Telephonic communications
  5. Plural exchange network or interconnection
  6. With interexchange network routing

Takeshi Miyagawa

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Apparatus and method for testing subscriber lines and equipment

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Reexamination Certificate

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Controlling device for range switch mechanism

Electricity: motive power systems – Automatic and/or with time-delay means – With nonautomatic control means
Reexamination Certificate

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Method of producing ferroelectric metal oxide crystalline...

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate

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Subscriber system transmission apparatus with line...

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2609352

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