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公开(公告)号：US2020281A
公开(公告)日：1935-11-05
申请号：US69191033
申请日：1933-10-03
Applicant: GEORGE STONE CLARENCE , ABRAHAM EDELMAN
Inventor： GEORGE STONE CLARENCE , ABRAHAM EDELMAN
CPC classification number: G01J3/10 , G01J3/02 , G01J3/0267 , G01J3/0286 , G01J3/51
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