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公开(公告)号：US1761725A
公开(公告)日：1930-06-03
申请号：US20510827
申请日：1927-07-12
Applicant: GEN ELECTRIC
Inventor： HARDY ARTHUR C , CUNNINGHAM FREDERICK W
IPC: G01J1/08
CPC classification number: G01J1/08
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2.发明授权Method of and apparatus for comparing and recording relative intensity of radiant energy 失效用于比较和记录辐射能相对强度的方法和装置
公开(公告)号：US1806197A
公开(公告)日：1931-05-19
申请号：US19584827
申请日：1927-06-01
Applicant: GEN ELECTRIC
Inventor： HARDY ARTHUR C , CUNNINGHAM FREDERICK W
IPC: G01J3/42
CPC classification number: G01J3/42
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公开(公告)号：US1806199A
公开(公告)日：1931-05-19
申请号：US27472928
申请日：1928-05-03
Applicant: GEN ELECTRIC
Inventor： HARDY ARTHUR C , CUNNINGHAM FREDERICK W
IPC: G01J3/42
CPC classification number: G01J3/42
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