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

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

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