ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,538,056, issued on Jan. 27.
"Detachable loudspeaker and metal detector" was invented by Maoquan Deng (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A detachable loudspeaker and metal detector includes a loudspeaker assembly detachably installed outside a control box. The loudspeaker assembly includes an outer protective shell, an inner protective shell, and a dynamic loudspeaker. The outer and inner protective shells form an accommodating cavity in which the dynamic loudspeaker is installed. The inner protective shell is facing the control box, which is equipped with a PCB board. The dynamic loudspeaker is electrically connected to the ...