

As early as the 1940s, Walter L. Shaw was thinking of speakerphones, conference calls, and call forwarding. Of the thirty-nine patents to his credit, those three telephonic breakthroughs were his biggest inventions, yet nobody knows his name. Ahead of the world by decades,...

As early as the 1940s, Walter L. Shaw was thinking of speakerphones, conference calls, and call forwarding. Of the thirty-nine patents to his credit, those three telephonic breakthroughs were his biggest inventions, yet nobody knows his name. Ahead of the world by decades,...