Prodigal-Genius-Biography-of-Nikola-Tesla_page_65

Prodigal-Genius-Biography-of-Nikola-Tesla | page 65 | https://thedailydialectics.com/pdfs/tesla/Prodigal-Genius-Biography-of-Nikola-Tesla/Prodigal-Genius-Biography-of-Nikola-Tesla.pdf

The amount involved was unquestionably a record one, for that time, for an invention. while Tesla liked to think of his complete polyphase system as a single invention, he was, nevertheless, selling about twenty inventions on which patents were already issued, and about as many more still to issue.…