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发明名称
METHOD OF AND APPARATUS FOR MANUFACTURING A BORE-HOLE BROADENER
摘要
申请公布号
PL269769(A1)
申请公布日期
1989.07.10
申请号
PL19870269769
申请日期
1987.12.29
申请人
OS BAD ROZWOJOWY TECH GEO
发明人
NATORSKI CZESLAW;NATORSKI KRZYSZTOF;PASTUSZAK STANISLAW;WROBLEWSKI MARCIN;ZURKO JAN
分类号
B22D25/00;B23P;B23P17/00;(IPC1-7):B23P/
主分类号
B22D25/00
代理机构
代理人
主权项
地址
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