Search Results for: Communication apparatus
financially support bell's experiments. [ ] patent matters would be handled by hubbard's patent attorney , anthony pollok . [ ] in march , bell and pollok visited the scientist joseph henry , who was then director of the smithsonian institution , and asked henry's advice on the electrical multi-reed apparatus
first and gray later challenged the primacy of bell's patent. bell was in boston on february and did not arrive in washington until february . the master telephone patent, , march , bell's patent , was issued to bell on march , , by the u.s. patent office . bell's patent covered "the method of, and apparatus...
https://en.wikipedia.org/wiki/Alexander_Graham_Bell