Related terms:
caveat
meucci
wilber
tivadar
us patent
ringer box
rotary dial
telegraphy
switchboard
philipp reis
local battery
patent caveat
antonio meucci
patent office
alexander bell
transmitting
common battery
induction coil
thomas edison
water transmitter
carbon microphone
liquid transmitter
innocenzo manzetti
variable resistance
telephone exchange
alexander graham bell
patent application
public demonstrations
bell telephone company
invention of the telephone
Wikipedia sources:
Elisha Gray
Telephone
History of the telephone
Invention of the telephone
Alexander Graham Bell
Timeline of the telephone
Context for words:
elisha
gray
|
|