Which patent did Siemens & Halske base their electrical telegraphs on?
Charles Wheatstone's
Thomas Edison's
Alexander Graham Bell's
Nikola Tesla's
Answer
Siemens & Halske based their electrical telegraphs on Charles Wheatstone's patent from 1837. This allowed them to manufacture and sell telegraphs in Europe, which became the foundation of their business.
Electrifying Legacy: The Siemens & Halske Trivia Challenge