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经营范围
发明名称
Fire tube boiler or water heater
摘要
申请公布号
US3392711(A)
申请公布日期
1968.07.16
申请号
US19660600613
申请日期
1966.12.09
申请人
JOHN J. WOLFERSPERGER
发明人
WOLFERSPERGER JOHN J.
分类号
F22B33/08
主分类号
F22B33/08
代理机构
代理人
主权项
地址
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