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发明名称
WEB SUPPORTING ROLLERS
摘要
申请公布号
CA817812(A)
申请公布日期
1969.07.15
申请号
CAD817812
申请日期
申请人
SINGER-COBBLE LIMITED
发明人
ERNEST K. LUND;RAYMOND V. EVANS
分类号
主分类号
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