Title:
Ion producing mechanism
United States Patent 2848620
Inventors:
Backus, John G.
Publication Date:
08/19/1958
Export Citation:
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Assignee:
Backus, John G.
Primary Class:
250/425
Other Classes:
313/362.1
International Classes:
H01J49/12; H01J49/10
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US Patent References:
1767218Positive-ion emitter