ALEXANDRIA, Va., May 12 -- United States Patent no. 12,625,293, issued on May 12, was assigned to CHI KANG RONALD CHOU (Dongguan, China) and MEET ELECTRONICS LTD. (Dongguan, China).
"Frequency-modulation type metal tracker" was invented by Chi Kang Ronald Chou (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a frequency-modulation type metal tracker, relating to the technical field of detecting instruments. The frequency-modulation type metal tracker includes a metal tracking transmitter which can modulate a wireless frequency-modulation tracking signal and broadcast the wireless frequency-modulation tracking signal to the outside through a metal object, and a metal tracking recei...