4. Electrical transmission or interconnection systems
  5. Plural supply circuits or sources
  6. One source floats across or compensates for other source

Hun-Cheol Kwon

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Tone generator for electronic exchange

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

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Uninterruptible power supply circuit

Electrical transmission or interconnection systems – Plural supply circuits or sources – One source floats across or compensates for other source
Patent

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Profile ID: LFUS-PAI-P-435611

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