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发明名称
Ventilation regulating apparatus
摘要
申请公布号
US1870992(A)
申请公布日期
1932.08.09
申请号
US19300424513
申请日期
1930.01.30
申请人
JULIAN MAAS;CHESTER E. MYERS
发明人
FREULER ARTHUR L.
分类号
E05F15/20
主分类号
E05F15/20
代理机构
代理人
主权项
地址
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