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公开(公告)号：US2139463A
公开(公告)日：1938-12-06
申请号：US15058837
申请日：1937-06-26
Applicant: UNIV KENTUCKY
Inventor： RITCHER PAUL O , CALFEE ROBERT K
IPC: B05B11/06
CPC classification number: B05B11/06
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