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摘要
申请公布号
US1801949(A)
申请公布日期
1931.04.21
申请号
US19280313790
申请日期
1928.10.20
申请人
MILES E. HEATH
发明人
BROUDY CELIA;BROUDY ISADORE
分类号
F24F3/16
主分类号
F24F3/16
代理机构
代理人
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