4. Stoves and furnaces
  5. Stove hoods

Erwin Potthof

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Circuit arrangement for the control of a ventilator

Stoves and furnaces – Stove hoods
Patent

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Digital display with stepping device

Signals and indicators – Navigation devices
Patent

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Electronic acoustic signal emitter

Communications – electrical: acoustic wave systems and devices – Signal transducers
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Electronic apparatus for monitoring the remaining storage period

Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Patent

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Electronic control circuit for the formation of a monostable swi

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent

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Profile ID: LFUS-PAI-P-92954

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