ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,667, issued on March 31, was assigned to Mi Jung Park (Gyeonggi-do, South Korea).
"Fishing sinker device based on magnet" was invented by Mi Jung Park (Gyeonggi-do, South Korea), Sang Hyun Park (Gyeonggi-do, South Korea) and Hee Jung Jung (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fishing sinker device is configured to extend based on a coupling force of magnets. The fishing sinker device includes a main member formed at least partially of a magnetic material and including a lower coupling part, a sub member formed to be engaged with the main member with the same diameter, and configured to maintain a coupling force ther...