PIONEER ELECTRONICS RESEARCH LABORATORY
Historical Landmark
Description: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.
Registration Date: 11/3/1969
Location:
City: Palo Alto
County: Santa Clara
Directions:
In sidewalk, SE corner of Channing Ave and Emerson St, Palo Alto
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