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发明名称
Process of making felted mineral fiber
摘要
申请公布号
US1899056(A)
申请公布日期
1933.02.28
申请号
US19280301850
申请日期
1928.08.24
申请人
BANNER ROCK CORPORATION
发明人
POWELL EDWARD R.
分类号
C04B20/00;C04B26/00
主分类号
C04B20/00
代理机构
代理人
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