Historical marker at former lab and factory site of the Federal Telegraph Company

Palo Alto, California (CA), US

ELECTRONICS
RESEARCH LABORATORY

ORIGINAL SITE OF THE LABORATORY AND FACTORY OF FED-

ERAL TELEGRAPH COMPANY, FOUNDED IN 1909 BY CYRIL F.

ELWELL. HERE, WITH TWO ASSISTANTS, DR. LEE DE FOREST, IN-
VENTOR OF THE THREE-ELEMENT RADIO VACUUM TUBE,
DEVISED IN 1911-13 THE FIRST VACUUM TUBE AMPLIFIER
AND OSCILLATOR. WORLD-WIDE DEVELOPMENTS BAS-
ED ON THIS RESEARCH LED TO MODERN RADIO COM-
MUNICATION, TELEVISION AND THE ELECTRONICS AGE.

CALIFORNIA REGISTERED
HISTORICAL LANDMARK NO. 836

Historical marker at former lab and factory site of the Federal Telegraph Company

Palo Alto, California (CA), US

ELECTRONICS
RESEARCH LABORATORY

ORIGINAL SITE OF THE LABORATORY AND FACTORY OF FED-
ERAL TELEGRAPH COMPANY, FOUNDED IN 1909 BY CYRIL F.

ELWELL. HERE, WITH TWO ASSISTANTS, DR. LEE DE FOREST, IN-
VENTOR OF THE THREE-ELEMENT RADIO VACUUM TUBE,
DEVISED IN 1911-13 THE FIRST VACUUM TUBE AMPLIFIER
AND OSCILLATOR. WORLD-WIDE DEVELOPMENTS BAS-
ED ON THIS RESEARCH LED TO MODERN RADIO COM-
MUNICATION, TELEVISION AND THE ELECTRONICS AGE.

CALIFORNIA REGISTERED
HISTORICAL LANDMARK NO. 836

Historical, Scientific - Test Facility
Links: en.wikipedia.org
By: kjfitz