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发明名称
Vacuum-cleaner bag
摘要
申请公布号
US2237499(A)
申请公布日期
1941.04.08
申请号
US19380195370
申请日期
1938.03.11
申请人
OSTERDAHL RAGNAR K
发明人
OSTERDAHL RAGNAR K.
分类号
A47L9/14
主分类号
A47L9/14
代理机构
代理人
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地址
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