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发明名称
ALARM DEVICE FOR REFRIGERANT GAS VENT VACUUM PUMP
摘要
申请公布号
JPH0526173(A)
申请公布日期
1993.02.02
申请号
JP19910203615
申请日期
1991.07.19
申请人
NIPPON PISTON RING CO LTD
发明人
ASAI HIDEHIRO
分类号
F04B49/06;F04B49/10
主分类号
F04B49/06
代理机构
代理人
主权项
地址
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