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申请公布号
US2042444(A)
申请公布日期
1936.05.26
申请号
US19330694216
申请日期
1933.10.19
申请人
THE DORR COMPANY, INC.
发明人
CARSTENS CARL E.;JR. ALEXANDER D. MARRIOTT,
分类号
B03B5/50
主分类号
B03B5/50
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