4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

Seiji Tsubouchi

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Combination heat-sensing fire detector

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Combination ionization and photoelectric smoke detector

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Fire detector

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Fire detector

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent

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Profile ID: LFUS-PAI-P-415207

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