Ericsson opens its first major factory at Tulegatan
Ericsson opens its first major factory at Tulegatan
PDF:
1884 The Long Distance Telephone Co.
PDF: 1884 The Long Distance Telephone Co.
Doolittle builds the first long distance copper wire circuit (NY to Boston)
Doolittle builds the first long distance copper wire circuit (NY to Boston)
PDF:
American Bell Telephone Annual Report, 1884
PDF: American Bell Telephone Annual Report, 1884
Woods patents improved telephone transmitter
Woods patents improved telephone transmitter
