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发明名称
Seal
摘要
申请公布号
US1972078(A)
申请公布日期
1934.09.04
申请号
US19310526303
申请日期
1931.03.30
申请人
CATERPILLAR TRACTOR CO.
发明人
EBERHARD HARMON S.
分类号
F16C33/78;F16J15/34;F16J15/36
主分类号
F16C33/78
代理机构
代理人
主权项
地址
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