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经营范围
发明名称
Electrical vaporizer
摘要
申请公布号
US1819123(A)
申请公布日期
1931.08.18
申请号
US19290382209
申请日期
1929.07.30
申请人
ROY M. WOLVIN
发明人
ROBINSON JOSEPH
分类号
F24H1/00
主分类号
F24H1/00
代理机构
代理人
主权项
地址
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