Lockable drill steel and chuck assembly
A drill steel-chuck assembly which includes a drill steel which has a plurality of faces and opposite ends. The drill steel has one portion adjacent one of the opposite ends thereof and a mediate portion spaced apart from the one portion. The drill steel further has one transition portion between th...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
09.04.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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