4. Electrical transmission or interconnection systems
  5. Personnel safety or limit control features

Charles Jacobberger

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Safety device for an industrial boiler comprising relays...

Electrical transmission or interconnection systems – Personnel safety or limit control features
Reexamination Certificate

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Safety device for boiler comprising a time delay protected...

Combustion – Timer – programmer – retarder or condition responsive control – With test circuit checking or analyzing flame sensing...
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Profile ID: LFUS-PAI-P-2415152

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