Photo-electric tube
United States Patent 1852808
Inventors:
Johnston, Philip J.
Publication Date:
04/05/1932
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Export Citation:
Assignee:
GEN ELECTRIC
Primary Class:
Other Classes:
445/29, 427/109, 427/107, 313/539, 313/331, 313/538, 427/74, 427/125, 65/59.260
International Classes:
H01J40/04; H01J40/00