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发明名称
Method of recovering cork-like material from birch tree bark
摘要
申请公布号
US2973152(A)
申请公布日期
1961.02.28
申请号
US19580750648
申请日期
1958.07.24
申请人
STUART OWENS ROBERT
发明人
OWENS ROBERT STUART
分类号
B02C18/14;B02C23/16;B27K7/00;B27L11/00
主分类号
B02C18/14
代理机构
代理人
主权项
地址
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