Otis Boykin was a Black American Inventor and Engineer who held 12 patents over 28 devices! He invented a more precise control function for the 1st successful cardiac pacemaker. He improved electrical resistors used today in: TV, radio, computers, smartphones, and missiles! pic.twitter.com/4VXM7EeIe5
English
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek