On This Day in Telephone History May 16TH 1876 May 16, 2026 by The Telephone Museum On This Day in Telephone History May 16TH 1876 Thomas Edison Files First Patent Application for Acoustic Telegraphy. U.S. Patent 182,996 was granted October 10, 1876. Β Β π π π π π π π π Smile and the Whole World Smiles with You π π π π π π π π π Think Like a Telephone Engineer Every breakthrough in telephone history began with an engineer solving a problem. Could you solve it? βΆ Start Today's Challenge