who invented the compound bow?

The compound bow was invented by Holless Wilbur Allen, an American bowyer, in the mid-1960s. He experimented by modifying a conventional recurve bow, adding pulleys to create a levering system that made drawing the bow easier and allowed the bow to shoot arrows faster and more accurately. Allen filed for a patent on June 23, 1966, and was granted U.S. patent 3,486,495 in December 1969. His invention revolutionized archery and hunting, and the modern compound bow is still fundamentally based on his design.