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发明名称
Coupling mechanism
摘要
申请公布号
US2477476(A)
申请公布日期
1949.07.26
申请号
US19440553070
申请日期
1944.09.07
申请人
TREADWELL CONSTRUCTION COMPANY
发明人
CHALMERS DAVID B.
分类号
B61G5/02
主分类号
B61G5/02
代理机构
代理人
主权项
地址
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