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Title:
Mass spectrometer
United States Patent 2582216
Inventors:
Koppius, Otto G.
Publication Date:
01/15/1952
Assignee:
PHILIPS LAB INC
Primary Class:
Other Classes:
82/137, 250/287, 250/291, 313/362.1
International Classes:
H01J49/02; H01J49/14; H01J49/40
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