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摘要
申请公布号
US2464815(A)
申请公布日期
1949.03.22
申请号
US19460691907
申请日期
1946.08.21
申请人
JOHN KERTES
发明人
KERTES JOHN
分类号
B26F1/04;B26F1/36
主分类号
B26F1/04
代理机构
代理人
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