4. Communications: electrical
  5. Condition responsive indicating system
  6. With particular system function

Yukihiko Usami

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Fire alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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Fire alarm system

Communications: electrical – Systems – Manual alarm telegraph; e.g. – other than signal box type
Patent

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Fire alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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Profile ID: LFUS-PAI-P-1294389

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