4. Motors: spring, weight, or animal powered
  5. Spring
  6. With winding means

Francis M. Howe

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Leak sensor and indicating system for vacuum circuit interrupter

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

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Stored energy operation for breakers

Motors: spring – weight – or animal powered – Spring – With winding means
Patent

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Profile ID: LFUS-PAI-P-1257688

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