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公开(公告)号:US2370609A
公开(公告)日:1945-02-27
申请号:US39078641
申请日:1941-04-28
Applicant: ECONOMICS LAB
Inventor: WILSON JOHN L , MENDENHALL ELWYN E
CPC classification number: A47L15/449 , A47L15/0055 , G01N27/07 , Y10T137/7306
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公开(公告)号:US2510510A
公开(公告)日:1950-06-06
申请号:US62017245
申请日:1945-10-03
Applicant: ECONOMICS LAB
Inventor: MENDENHALL ELWYN E
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