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Densaburo Sakai Patents
Assignee:
Densaburo Sakai
Address:
Osaka, JP
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4507028 Combined drill and reamer March 26, 1985
A cutting tool combining a front drill part and a rear reamer part along one axial line, having twist drill flutes through both parts and reamer cutting edges spiraling in the opposite direction to that of the drill cutting edges, whereby the tool can provide a through hole in a workpiec

 
 
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