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发明名称
Automatic by-pass for hydraulic mechanisms
摘要
申请公布号
US1969736(A)
申请公布日期
1934.08.14
申请号
US19330660071
申请日期
1933.03.08
申请人
RALPH ERLING
发明人
ERLING RALPH
分类号
B63H25/28
主分类号
B63H25/28
代理机构
代理人
主权项
地址
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