4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Robert Alfred Duchrow

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Contactor assembly with arc steering system

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With arc-suppression or extinguishing means
Reexamination Certificate

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Method of manufacturing a current switch magnetic intensifier

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2263950

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