4. Measuring, testing, or signalling instruments
  5. Security or signal instrument or casing
  6. Alarm or control thereof

Simplex Time Recorder Company

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Addressable devices with interface modules having electrically r

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

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Alarm system having improved control of notification...

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

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Alarm system with individual alarm indicator testing

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

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Building alarm system with synchronized strobes

Communications: electrical – Systems – Signal light systems
Patent

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Dual-line time recorder

Recorders – Printing – dotting – or punching marker – Time record
Patent

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Profile ID: LFUS-PAI-P-141020

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