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经营范围
发明名称
Suction cleaner
摘要
申请公布号
US2073489(A)
申请公布日期
1937.03.09
申请号
US19340713347
申请日期
1934.02.28
申请人
QUADREX CORPORATION
发明人
LEATHERS WARD
分类号
A47L5/24;A47L9/12
主分类号
A47L5/24
代理机构
代理人
主权项
地址
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