General Electric and Bell Labs are two of the most important companies in consumer goods. In 1925, both invented the telephone and telegraph.
Bell Labs.
two engineering at BELL LABS
American telephone and telegraph (at&t)
The transistor was not discovered, it was invented.The first patent for a transistor was filed in Canadaon October 22, 1925. The device was a FET and although some prototypes apparently worked the device was never commercialized and sold.The first practical transistor was invented on November 17, 1947 at Bell Labs while attempting to recreate the FET. However this device was a bipolar point contact transistor instead. Early in 1948 another researcher at Bell Labs invented the BJT. Both point contact and BJT types of transistors were rapidly commercialized by Bell Labs and sold by many companies.The first practical FET was invented in 1953 at Bell Labs.
Cells for mobile phone base stations were invented in 1947 by Bell Labs engineers at AT&T and further developed by Bell Labs during the 1960s.
The satellite phone was invented in 1947, by Bell Labs engineers at AT&T. (:
Approximately 1969 at Bell Labs, by Dennis Richie and Ken Thompson.
Dennis Ritchie in 1972 in AT & T's Bell labs
Yes the 1 cell phone has been invented in Bell Labs
The radio altimeter was invented by American engineer, Lloyd Espenshied. This was invented in 1924, and was demonstrated by Bell Labs in New York.Ê
Bell Labs Technical Journal was created in 1996.
The National Bell Telephone Company became the American Bell Telephone Company in 1878