Photo-electric tube
United States Patent 1956590

Inventors:
Max, Pressler
Publication Date:
05/01/1934
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Assignee:
RADIO PATENTS CORP
Primary Class:
313/33
Other Classes:
250/237R, 220/2.10R, 250/214.100, 313/291, 313/35, 313/32, 313/541
International Classes:
H01J40/04; H01J40/00