On Valentine’s Day in 1876, Alexander Graham Bell applied for a patent on what invention of his?

On Valentine’s Day in 1876, Alexander Graham Bell applied for a pate

1.	On Valentine’s Day in 1876, Alexander Graham Bell applied for a patent on what invention of his?
Answer» A popular myth is that Graham Bell applied for a Telephone patent on Valentine's day in 1876. This is actually false, Graham bell applied for the telephone patent on the 7th of March, 1876 when he was just 29 years old. This has been verified by original patent documents from the US PATENTS office and a American SUPREME Court case which was fought between Graham Bell and ELISHA gray who filed his own telephone patent only 2 hours LATE of Graham Bell