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发明名称
Washer
摘要
申请公布号
US1781129(A)
申请公布日期
1930.11.11
申请号
US19280283346
申请日期
1928.06.06
申请人
SEXAUER JOHN A
发明人
SEXAUER JOHN A.
分类号
F16K1/46
主分类号
F16K1/46
代理机构
代理人
主权项
地址
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