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发明名称
Vacuum regulator
摘要
申请公布号
US1849252(A)
申请公布日期
1932.03.15
申请号
US19290332852
申请日期
1929.01.16
申请人
SHIELD WILLIAM C
发明人
SHIELD WILLIAM C.
分类号
B01D1/00;B01D3/10
主分类号
B01D1/00
代理机构
代理人
主权项
地址
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