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发明名称
Drehtisch mit in seiner mittleren OEffnung angebrachtem Futter und einer Sperrschiene
摘要
申请公布号
DE590027(C)
申请公布日期
1933.12.21
申请号
DE1931N031468D
申请日期
1931.01.28
申请人
THE NATIONAL SUPPLY CORPORATION
发明人
分类号
E21B3/04
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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