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Power transmission apparatus for wireless power transfer; power supplies for wireless power transfer; matching circuits; impedance matching units; control apparatus for wireless power transfer; measuring devices for wireless power transfer; power transmitting coils; power receiving apparatus for wireless power transfer; power receiving coils; microwave generators; power supply units; matching units; measuring apparatus for measuring current, voltage, power and phase; electric or magnetic meters and testers including ammeters, voltmeters, wattmeters and phase indicators; measuring apparatus for wireless power transfer; ammeters; voltmeters; wattmeters; phase indicators; electric or magnetic meters and testers; power supply units for wireless power transfer; power distribution or control machines and apparatus; measuring or testing machines and instruments; rotary converters; phase modifiers; electronic machines, apparatus and their parts; charging apparatus for wireless power transfer; storage apparatus for wireless power transfer; transmitting apparatus for wireless power transfer; receiving apparatus for wireless power transfer; telecommunication machines and apparatus; wavemeters; batteries and cells; magnetic cores; resistance wires; electrodes