Patent EP 0244826A2

Patent number	EP 0244826A2 (click link for details and documents via Google Patents)
Title	Multiple beam electron discharge tube having beam convergence and beam-to-beam compression compensation
Inventors	Conrad Odenthal
Company	Tektronix Inc
Filing date	1987-05-05
Grant date	1987-11-11

Published 1987-11-11, withdrawn