Patents - 1958

Microwave tube
Charles K. Birdsall and Dean A. Watkins
U.S. Patent 2,859,374. November 1958

Traveling-wave tube
Charles K. Birdsall and Lester M. Field
U.S. Patent 2,853,642. September 1958

Traveling wave tube of high forward wave impedance
Charles K. Birdsall
U.S. Patent 2,851,631. September 1958

High power traveling-wave tube
Charles K. Birdsall
U.S. Patent 2,851,630. September 1958

Traveling wave tube slow-wave structure
Thomas E. Everhart
U.S. Patent 2,846,612. August 1958

Self-Quenching Oscillator
Ivan P. Kaminow and R. J. Kircher
U.S. Patent 2,836,724. May 1958

Electron gun
Charles K. Birdsall
U.S. Patent 2,831,141. April 1958