Alexander Graham Bell Day (7 March)

AGB (1847-1922) was the son of Alexander Melville Bell (1819-1905) "teacher and researcher of physiological phonetics...author of numerous works on orthoepy and elocution...creator of Visible Speech" (Wiki).
Well, the telephone certainly changed some things about our use of language.
Apparently it was Thomas Edison who established "Hello" (or "Hello?") as the standard English thing to say when answering the telephone.
And this day? Oh, on 7-3-1876 AGB was granted a US patent for an "Improvement in Telegraphy".
Three days later it was: "Mr.Watson, come here, I want to see you."