” allowed a telegraph station to send voice and telegraph messages over a single wire. Proceeds from the sale gave Woods the luxury of being a full-time inventor.

     Granville T. Woods was so successful that some would even refer to Thomas Edison as “The White Granville T. Woods.” He dedicated his life’s work to developing groundbreaking and life changing technology. In the railroad industry alone, Woods had invented 15 appliances for electric railways and received nearly 60 patents. […]