Cute Young Brunette Girl With Blue Eyes Undresses A White Chemise And Panties On The Bed In The Room With An Old Phone

• 1874 — Meucci, after having renewed the caveat for two years does not renew it again, and the caveat lapses.
• 6 April 1875 — Bell's U.S. Patent 161,739 "Transmitters and Receivers for Electric Telegraphs" is granted. This uses multiple vibrating steel reeds in make-break circuits.
• 11 February 1876 — Gray invents a liquid transmitter for use with a telephone but does not build one.
• 14 February 1876 — Elisha Gray files a patent caveat for transmitting the human voice through a telegraphic circuit.