Prodigal-Genius-Biography-of-Nikola-Tesla_page_39

Prodigal-Genius-Biography-of-Nikola-Tesla | page 39 | https://thedailydialectics.com/pdfs/tesla/Prodigal-Genius-Biography-of-Nikola-Tesla/Prodigal-Genius-Biography-of-Nikola-Tesla.pdf

more descriptively called a loud speaker--an ancestor of the sound producer now so common in the home radio set. This invention was never patented and was never publicly described, but, Tesla later declared, in its originality, design, performance and ingenuity it would make a creditable showing…