1875
1877
AGB long distance membrane receiver
AGB magnetic transmitter
Bell liquid transmitter
Feb 14, 11:30am: Alexander Graham Bell's lawyer files his telephone patent
Feb 14: Elisha Gray files telephone caveat
Patent #174,465 for the telephone is issued to Bell
Western Union begins paying Edison to develop a 'speaking telegraph"
Western Union's Orton declines to buy Bell's patent for $100k
First long distance call
Mabel insists Bell go to the U.S. Centennial Exhibit in Philadelphia, where his phone is a huge hit
Lars Magnus Ericsson founds Ericsson as a mechanical engineering shop
