Chi-ray fluorescent spectrometry
United States Patent 2783385
Inventors:
Sjoerd, Wytzes
Publication Date:
02/26/1957
Assignee:
HARTFORD NAT BANK & TRUST CO
Other Classes:
378/83, 378/145
International Classes:
G01N23/207; G01N23/223; G01N23/20; G01N23/22