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经营范围
发明名称
Automatic vacuum, pressure gravity water system
摘要
申请公布号
US1825772(A)
申请公布日期
1931.10.06
申请号
US19300481300
申请日期
1930.09.11
申请人
FRANK PIOTTI;KARREY MOOMJIAN
发明人
BOGGS HUGH L.
分类号
F04F3/00
主分类号
F04F3/00
代理机构
代理人
主权项
地址
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