Heck, the original telephones were voice powered. That old-time ringing crank actually powered a magneto to ring the bell.
John W. Kennedy
“Compact is becoming contract; man only earns and pays.”
– Charles Williams
Heck, the original telephones were voice powered. That old-time ringing crank actually powered a magneto to ring the bell.
John W. Kennedy
“Compact is becoming contract; man only earns and pays.”
– Charles Williams