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经营范围
发明名称
Wall and door structure for a sound proof room
摘要
申请公布号
US3120295(A)
申请公布日期
1964.02.04
申请号
US19580746250
申请日期
1958.07.02
申请人
C. W. LEMMERMAN, INC.
发明人
LEMMERMAN CARL W.
分类号
E04B1/82;E04B1/84;E06B5/20
主分类号
E04B1/82
代理机构
代理人
主权项
地址
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