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发明名称
Apparatus for the pneumatic evacuation of materials
摘要
申请公布号
US2660341(A)
申请公布日期
1953.11.24
申请号
US19500159776
申请日期
1950.05.03
申请人
FINNIE & NORBOM
发明人
NORBOM RAGNAR A.
分类号
B60P1/60;B61D7/32
主分类号
B60P1/60
代理机构
代理人
主权项
地址
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