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经营范围
发明名称
HEAT-INSULATING SHEATH
摘要
申请公布号
PL115109(B1)
申请公布日期
1981.03.31
申请号
PL19770197105
申请日期
1977.03.31
申请人
发明人
分类号
B32B17/00;E04B;E04B1/74;F16L;F16L59/14;(IPC1-7):F16L59/14
主分类号
B32B17/00
代理机构
代理人
主权项
地址
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