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发明名称
Elevator latch
摘要
申请公布号
US2105077(A)
申请公布日期
1938.01.11
申请号
US19360078830
申请日期
1936.05.09
申请人
BYRON-JACKSON CO.
发明人
HERTEL RICHARD K.
分类号
E21B19/06
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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