ALEXANDRIA, Va., April 21 -- United States Patent no. 12,604,949, issued on April 21, was assigned to Bo Cheng (Nanchang, China).
"Manual ear piercing gun" was invented by Bo Cheng (Nanchang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A manual ear-piercing gun, comprising a front gun part (1) and a rear gun part (2). The front gun part (1) and the rear gun part (2) are nested and can move linearly relative to each other. The front gun part (1) is constructed to have a mounting groove, and a sliding rail member (6) is provided in the mounting groove. A mounting slot (9b) for an earring backing mounting part (9) is formed between a side groove wall of the mounting groove and the end of the sliding ra...