US always had black inventors - even when patent system excluded them

The patent system was ostensibly open to free black people

America has long been the land of innovation. More than 13,000 years ago, the Clovis people created what many call the “first American invention” – a stone tool used primarily to hunt large game. This spirit of American creativity has persisted through the millennia, through the first American patent granted in 1641 and on to today.

One group of prolific innovators, however, has been largely ignored by history: black inventors born or forced into American slavery. Though US patent law was created with color-blind language to foster innovation, the