4. Telephonic communications
  5. Plural exchange network or interconnection
  6. Interexchange signalling

Masayuki Hashimura

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Ceramics coated cemented-carbide tool with high-fracture resista

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Heat-treated steel wire for high strength spring

Metal treatment – Stock – Ferrous
Reexamination Certificate

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High strength spring steel and process for producing same

Metal treatment – Stock – Ferrous
Patent

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High toughness spring steel

Metal treatment – Stock – Ferrous
Reexamination Certificate

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Steel excellent in forgeability and machinability

Metal treatment – Stock – Ferrous
Reexamination Certificate

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Profile ID: LFUS-PAI-P-143706

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