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发明名称
Drehvollbohrer mit gegeneinander abgesetzten Bohrzaehnen
摘要
申请公布号
DE578460(C)
申请公布日期
1933.06.14
申请号
DED578460D
申请日期
1930.06.17
申请人
CHICAGO PNEUMATIC TOOL COMPANY
发明人
分类号
E21B10/26;E21B10/42;E21B10/60
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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