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经营范围
发明名称
Hung ceiling for sound insulation
摘要
申请公布号
US2024961(A)
申请公布日期
1935.12.17
申请号
US19330685283
申请日期
1933.08.15
申请人
THE GEORGE S. HOLMES CO., INC.
发明人
BARGE WILLIAM D.
分类号
E04B9/18
主分类号
E04B9/18
代理机构
代理人
主权项
地址
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