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发明名称
VACUUM CLEANING HEAD UTILIZING MULTIPLE SUCTION CAVITIES
摘要
申请公布号
CA609829(A)
申请公布日期
1960.12.06
申请号
CAD609829
申请日期
申请人
CHAUNCEY L. ROCKWELL
发明人
CHAUNCEY L. ROCKWELL
分类号
主分类号
代理机构
代理人
主权项
地址
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