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Pioneer Electronics Research Laboratory
SE corner of Channing Ave and Emerson St, in sidewalk, Palo Alto,
CA ,
USA
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California State
Historical Marker
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This is the original site of the laboratory and factory of Federal Telegraph Company, founded in 1909 by Cyril F. Elwell. Here, Dr. Lee de Forest, inventor of the three-element radio vacuum tube, devised the first vacuum tube amplifier and oscillator in 1911-13. Worldwide developments based on this research led to modern radio communication, television, and the electronics age.
Last updated: 2/15/2016 21:05:00 |
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