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发明名称
OIL TANK CLEANING METHOD
摘要
申请公布号
CA318642(A)
申请公布日期
1932.01.05
申请号
CAD318642
申请日期
申请人
THE BUTTERWORTH SYSTEM INC.
发明人
ARTHUR B. BUTTERWORTH
分类号
主分类号
代理机构
代理人
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