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发明名称
Size-grading mechanism
摘要
申请公布号
US1972369(A)
申请公布日期
1934.09.04
申请号
US19310580031
申请日期
1931.12.10
申请人
ALLEN LEWIS R
发明人
ALLEN LEWIS R.
分类号
B07B13/04
主分类号
B07B13/04
代理机构
代理人
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