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

Takao Fujisawa

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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 alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate

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Fire alarm system

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

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Fire alarm system and terminal equipment in the same

Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate

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Process of molding a coated plastic lens

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Composite or multiple layer
Patent

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Profile ID: LFUS-PAI-P-1468558

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