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发明名称
Improvements in pre-heated scrapers for softening and removing materials of a bituminous type
摘要
申请公布号
GB643253(A)
申请公布日期
1950.09.15
申请号
GB19480024326
申请日期
1948.09.16
申请人
ALBERT JAMES BURGESS;ALBERT ARNOLD WRIGHT
发明人
分类号
E01C23/082
主分类号
E01C23/082
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