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经营范围
发明名称
Suction apparatus
摘要
申请公布号
US2442282(A)
申请公布日期
1948.05.25
申请号
US19460708749
申请日期
1946.11.08
申请人
BETTS JAMES A
发明人
BETTS JAMES A.
分类号
A61M3/02
主分类号
A61M3/02
代理机构
代理人
主权项
地址
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