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经营范围
发明名称
Polyethylene balloon
摘要
申请公布号
US3149017(A)
申请公布日期
1964.09.15
申请号
US19610112430
申请日期
1961.05.24
申请人
W. R. GRACE & CO.
发明人
EHRREICH JOHN E.;FAZIO CHARLES P.;NICKERSON BEVERLY A.
分类号
B29C49/00;B29C71/04
主分类号
B29C49/00
代理机构
代理人
主权项
地址
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