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发明名称
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摘要
申请公布号
US2197673(A)
申请公布日期
1940.04.16
申请号
US19370169894
申请日期
1937.10.19
申请人
RICARDO ALBERTZ
发明人
ALBERTZ RICARDO
分类号
E05B19/00;E05B19/04;E05B27/00;E05B27/06
主分类号
E05B19/00
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代理人
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