What patent does Shimano spinning wheel have?

Inclined export patent. Shimano is one of the Japanese fishing gear manufacturers. Of course, Shimano is one of the few in the world in terms of bicycle parts. Shimano's spinning wheel has a patent for oblique export, so Dawa can't use it. Then, because this oblique line Shimano was ahead of Daiwa for many years, Daiwa later produced the LT line cup, and Shimano's sales gradually declined. Spinning wheel is the most widely used reel, which is widely used in sea fishing and Lu Ya activities, and can also be used for fishing in lakes and ponds. According to its function and use, it can be roughly divided into automatic release wheel, hand brake wheel and automatic hand brake dual-function wheel.