TOOL HOLDER, AND CHISEL SUPPORT AND DRILLING BIT FOR A DRILL HEAD
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United States of America Patent
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Issued Date -
Aug 7, 2014
app pub date -
Jun 28, 2012
filing date -
Jul 8, 2011
priority date (Note) -
Abandoned
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Abstract
A drill head including a tool holder, chisel supports mounted thereon and drill bits. According to this invention, the chisel supports can be separated from the tool holder.
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