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发明名称
Expansible plunger
摘要
申请公布号
US2461873(A)
申请公布日期
1949.02.15
申请号
US19460661281
申请日期
1946.04.11
申请人
BULOVA WATCH COMPANY, INC.
发明人
BEEH LOUIS
分类号
F04B49/12;F16J1/00
主分类号
F04B49/12
代理机构
代理人
主权项
地址
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