ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,395,790, issued on Aug. 19.

"Circuit of novel bubble toy" was invented by Huazun Lin (Shantou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit of a novel bubble toy is provided, including a power module E, an execution module, a manual control module, a signal amplification module, and a voice source signal input module. The power module is a 4.5V direct current power source. The power module E includes a port VCC, a port GND, and a port MIC. In the designed circuit, controlling a motor through a switch is reserved. Meanwhile, a voice can be input to a microphone MIC, so that the motor can also be controlled to operate through the voice, ...