Related terms:
elisha gray
meucci
liquid transmitter
antonio meucci
alexander graham bell
bunsen batteries
philipp reis
variable resistance
water transmitter
alexander bell
patent caveat
innocenzo
bell telephone company
copper wire
carbon microphone
patent office
patent application
telephone exchange
us patent
sound waves
telegraphy
reis
thomas edison
transmitting
telegraph
Wikipedia sources:
Antonio Meucci
Elisha Gray
Invention of the telephone
Caveat
Timeline of the telephone
Telephone
Kinetoscope
Context for words:
caveat
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