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发明名称
Counterbalance mechanism for builder levers
摘要
申请公布号
US1777797(A)
申请公布日期
1930.10.07
申请号
US19290332946
申请日期
1929.01.16
申请人
WHITIN MACHINE WORKS
发明人
JOLLY JAMES
分类号
D01H1/36
主分类号
D01H1/36
代理机构
代理人
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