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发明名称
Pressure signaling indicator
摘要
申请公布号
US1932428(A)
申请公布日期
1933.10.31
申请号
US19290341923
申请日期
1929.02.23
申请人
PNEUMATIC INDICATOR COMPANY
发明人
SWEZEY JOEL L.
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主分类号
代理机构
代理人
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