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发明名称
Ventilating system for projectors
摘要
申请公布号
US1831762(A)
申请公布日期
1931.11.10
申请号
US19270180414
申请日期
1927.04.02
申请人
TRANS-LUX DAYLIGHT PICTURE SCREEN CORPORATION
发明人
BLOHM AUGUST H.
分类号
G03B21/16
主分类号
G03B21/16
代理机构
代理人
主权项
地址
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