Alexander Graham Bell (/ ˈ ɡ r eɪ. ə m /, born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born inventor, scientist and engineer who is credited with patenting the first practical telephone.He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885.. Bell's father, grandfather, and brother had all been associated with work on …

The Telephone Patent Conspiracy of 1876: The Elisha Gray — Alexander Bell Controversy. Jefferson, North Carolina: McFarland Publishing, 2000. ISBN 0-7864-0138-9. Gray, Charlotte. Reluctant Genius: Alexander Graham Bell and the Passion for Invention. New York: Arcade Publishing, 2006. ISBN 1-55970-809-3. Grosvenor, Edwin S. e Morgan Wesson.

Biography. Alexander Melville Bell was born in Edinburgh, Scotland, and studied under and became the principal assistant of his father, Alexander Bell (b. 3 March 1790, Fife, Scotland d. 23 April 1865, St. Pancras, North London), an authority on phonetics and speech disorders. From 1843 to 1865 he lectured on speech elocution at the University of Edinburgh, and from 1865 to …

Elisha Gray Elisha Gray, of ... Evenson, A. Edward (2000), The Telephone Patent Conspiracy of 1876: The Elisha Gray – Alexander Bell Controversy, McFarland, North Carolina, 2000. ... US 230168 Circuit for Telephone by Alexander Graham Bell (July 20, 1880) US 238833 ...

The Telephone Patent Conspiracy of 1876: The Elisha Gray - Alexander Bell Controversy. Jefferson, North Carolina: McFarland Publishing, 2000. ISBN 0-7864-0138-9. Gray, Charlotte. Reluctant Genius: Alexander Graham Bell and the Passion for Invention. New York: Arcade Publishing, 2006. ISBN 1-55970-809-3. Groundwater, Jennifer.

The Bell Homestead National Historic Site, located in Brantford, Ontario, Canada, also known by the name of its principal structure, Melville House, was the first North American home of Professor Alexander Melville Bell and his family, including his last surviving son, scientist Alexander Graham Bell.The younger Bell conducted his earliest experiments in North …

The Alexander Graham Bell Association for the Deaf and Hard of Hearing, also known as AG Bell, is an organization that aims to promote listening and spoken language among people who are deaf and hard of hearing.It is headquartered in Washington, D.C., with chapters located throughout the United States and a network of international affiliates.

The Bell Telephone Company, a common law joint stock company, was organized in Boston, Massachusetts, on July 9, 1877, by Alexander Graham Bell's father-in-law Gardiner Greene Hubbard, who also helped organize a sister company – the New England Telephone and Telegraph Company.The Bell Telephone Company was started on the basis of holding …

The Elisha Gray and Alexander Bell telephone controversy considers the question of whether Bell and Gray invented the telephone independently and, if not, whether Bell stole the invention from Gray. This controversy is narrower than the broader question of who deserves credit for inventing the telephone, for which there are several claimants.

Phonograph cylinders are the earliest commercial medium for recording and reproducing sound.Commonly known simply as "records" in their era of greatest popularity (c. 1896–1916), these hollow cylindrical objects have an audio recording engraved on the outside surface, which can be reproduced when they are played on a mechanical cylinder phonograph.