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发明名称
CHEMICAL FEED CONTROLLER
摘要
申请公布号
US3554212(A)
申请公布日期
1971.01.12
申请号
USD3554212
申请日期
1968.06.19
申请人
RITTER PFAUDLER CORP.
发明人
WILLIAM J. MARONEY
分类号
G05D21/02;(IPC1-7):G05D11/08;G05D11/13
主分类号
G05D21/02
代理机构
代理人
主权项
地址
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