Title: Telephone transmitter
Patent number: 308,817
Date granted: 12/02/1884
Notes: Assinged two-thirds to L. M. Hosea and D. Humphreys of Cincinnati
View this patent at the USPTO.
Inventor: Granville Woods
Title: Telephone transmitter
Patent number: 308,817
Date granted: 12/02/1884
Notes: Assinged two-thirds to L. M. Hosea and D. Humphreys of Cincinnati
View this patent at the USPTO.
Inventor: Granville Woods