4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. Polyphase

Osaki Electric Co. Ltd.

Corporate Assignee

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Arrayed optical device

Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate

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Carrier control method by using phase-pulse signals

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Carrier control method by using phase-pulse signals

Electrical transmission or interconnection systems – Superimposed unlike currents – Different frequencies or phase
Patent

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Electronic three-phase four-wire system watt-hour meter

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Polyphase
Patent

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Fiber collimator array

Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate

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Profile ID: LFUS-PAI-P-700601

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