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发明名称
Piston expander
摘要
申请公布号
US2057327(A)
申请公布日期
1936.10.13
申请号
US19350005633
申请日期
1935.02.08
申请人
NAOMI A. COOMBS
发明人
COOMBS WILLIAM M.
分类号
F16J1/06
主分类号
F16J1/06
代理机构
代理人
主权项
地址
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