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Johann Philipp Reis prototype phone
he constructed prototype 'make-and-break' telephones, today called Reis telephone. -
Antonio Santi Giuseppe Meuccis device
He made a telephone like device but there was no remark of transmission of electromagnetic sound waves. -
Tivadar Puskás switchboard exchange
He made the first switchboard exchange. as many as 64 customers could connect but only two could speak at a time -
Elisha Grays Micro telephone
Elisha gray invents a telephone that uses liquid to transmit sound but does not produce it. -
Alexander Graham Bell invents the first phone
He made sound transmittable through electricity. His patent was made in 1876 and he had to fight to take the name of the sole creator. -
model 302 telephone
first desk set telephone in the united states. it was also for U.S. service. -
First Mobile phone
Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model
