Thomas L. Jennings, First African American to Receive a Patent Black Press USA
OAKLAND POST — Patents are important official documents as they are used to safeguard one’s inventions. The first U.S. patent was issued in 1790.
Thomas L. Jennings, First African American to Receive a Patent Black Press USA
OAKLAND POST — Patents are important official documents as they are used to safeguard one’s inventions. The first U.S. patent was issued in 1790.