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发明名称
Acoustical material and method of manufacturing same
摘要
申请公布号
US1769519(A)
申请公布日期
1930.07.01
申请号
US19290355419
申请日期
1929.04.15
申请人
UNITED STATES GYPSUM COMPANY
发明人
KING GEORGE D.;STITT ROGER H.
分类号
C04B26/28;G05B11/44
主分类号
C04B26/28
代理机构
代理人
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地址
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