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发明名称
Coupling
摘要
申请公布号
US2260038(A)
申请公布日期
1941.10.21
申请号
US19400332510
申请日期
1940.04.30
申请人
ELECTRIC VACUUM CLEANER COMPANY, INC.
发明人
LANG HENRY T.
分类号
A47L9/24;F16L27/10
主分类号
A47L9/24
代理机构
代理人
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地址
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