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经营范围
发明名称
Acoustical board
摘要
申请公布号
US1811385(A)
申请公布日期
1931.06.23
申请号
US19290390967
申请日期
1929.09.07
申请人
JOHNS-MANVILLE CORPORATION
发明人
DIETZ FRANKLIN M.
分类号
E04B1/84;E04B1/86
主分类号
E04B1/84
代理机构
代理人
主权项
地址
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