Oskar Heil (20 March 1908, in Langwieden – 15 May 1994, San Mateo, California) was a German electrical engineer and inventor. He studied physics, chemistry...

1920s and 1930s, even if such a device had been built. In 1934, inventor Oskar Heil patented a similar device in Europe. From November 17 to December 23,...

Julius P. Heil (1876–1949), American politician, 30th governor of the State of Wisconsin Mechthild Heil (born 1961), German politician Oskar Heil (1908–1994)...

devices, and his work was ignored by industry. In 1934 German physicist Dr. Oskar Heil patented another field-effect transistor. There is no direct evidence...

first patented by Julius Edgar Lilienfeld in 1925. In 1934, inventor Oskar Heil independently patented a similar device in Europe. In the 1940s, Bell...

concentration camp Oskar Heil (1908–1994), German electrical engineer and inventor Oskar Hoffmann (1851–1912), Baltic-German painter Oskar Homolka (1898–1978)...

along with conventional woofers, referring to them as Heil transducers after their inventor, Oskar Heil. They are capable of considerable output levels and...

Transformer (AMT) is a type of electroacoustic transducer. Invented by Oskar Heil (1908–1994), it operates on a different transduction principle from other...

electrolytic capacitor History of the transistor John Bertrand Johnson Oskar Heil American Dictionary of National Biography: Supplement 2 by Mark C. Carnes...

Oliver Heaviside Re-formulated Maxwell's equations (vector calculus) Oskar Heil Field-effect transistor, loudspeaker Heinrich Rudolf Hertz Hertzian waves...