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发明名称
Sound absorbing material and method of making the same
摘要
申请公布号
US1869367(A)
申请公布日期
1932.08.02
申请号
US19300503680
申请日期
1930.12.20
申请人
CALICEL PRODUCTS, INC.
发明人
DEAN WILLIAM T.
分类号
E04B9/00
主分类号
E04B9/00
代理机构
代理人
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地址
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