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

Eric W. Hohlfelder

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Fire alarm pull station

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

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Lock mechanism for pull station

Locks – Special application – For closures
Reexamination Certificate

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Pull station

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

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Terminal block with self-locking terminals

Electrical connectors – With insulation other than conductor sheath – Insulating body having plural mutually insulated terminals...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1800894

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