Title:
DIFFERENTIAL EMISSION X-RAY GAUGING APPARATUS AND METHOD USING TWO MONOCHROMATIC X-RAY BEAMS OF BALANCED INTENSITY
United States Patent 3525863
Inventors:
Constantine, Nikiforos
Hill, Robert C.
Application Number:
US3525863DA
Publication Date:
08/25/1970
Filing Date:
12/28/1967
Assignee:
MINNESOTA MINING & MFG
Primary Class:
Other Classes:
250/399, 378/124, 378/137, 378/141, 378/143, 378/160
International Classes:
G01N23/223; (IPC1-7): G01N23/22
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