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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0417127 (1982-09-13) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 25 인용 특허 : 0 |
A drill bit suitable for making holes in glass and ceramic structures has an elongated member with a cutting end and a retaining end with an axis passing through its ends. The portion of the member near the retaining end is formed as a shank which is capable of being suitably held and rotated by a c
A drill bit which comprises an elongated member having a cutting end and a retaining end, and an axis passing through said ends; said member having a shank portion, said retaining end located on said shank portion, said shank portion sized and shaped so as to be capable of being retained and rotated
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