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发明名称
Method for making valve sleeves
摘要
申请公布号
US2319546(A)
申请公布日期
1943.05.18
申请号
US19400336380
申请日期
1940.05.21
申请人
UNITED AIRCRAFT CORPORATION
发明人
INSLEY ROBERT;GREEN ARTHUR W.
分类号
B21J5/08
主分类号
B21J5/08
代理机构
代理人
主权项
地址
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