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发明名称
Hydraulic locking device
摘要
申请公布号
US2922497(A)
申请公布日期
1960.01.26
申请号
US19560623192
申请日期
1956.11.19
申请人
P. L. PORTER CO.
发明人
PORTER PERCY LEE
分类号
A47C1/024
主分类号
A47C1/024
代理机构
代理人
主权项
地址
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