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发明名称
Improvements in or relating to electric vacuum cleaners
摘要
申请公布号
GB489242(A)
申请公布日期
1938.07.22
申请号
GB19370004735
申请日期
1937.02.17
申请人
N. V. RADIOFABRIEK & INGENIEURSBUREAU VOORHEEN VAN DER HEEM & BLOEMSMA
发明人
分类号
A47L5/36;A47L9/22
主分类号
A47L5/36
代理机构
代理人
主权项
地址
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