ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,154, issued on Oct. 28.
"Tape measure having installable bobbin" was invented by Dong Hun Kang (Busan, South Korea) and Seok Jun An (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a tape measure which includes a first housing module including a first housing providing a spring space on one side, a rotational shaft mounted rotatably on the first housing, a spring located in the spring space, the spring coupled to the first housing by one end and coupled to the rotational shaft by the other end, and a first cover covering the spring space, an installable bobbin rotatably mounted around the rotational shaft while being i...