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摘要
申请公布号
US1804955(A)
申请公布日期
1931.05.12
申请号
US19280270238
申请日期
1928.04.16
申请人
WALTER SCHLUMPF
发明人
SCHLUMPF WALTER
分类号
E05B29/00
主分类号
E05B29/00
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