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Class Information
Number: 408/119
Name: Cutting by use of rotating axially moving tool > Plural tool-assemblages > Coaxial > Spring biased
Description: Device including resilient means urging the tools to move together along the tool-axis.










Patents under this class:

Patent Number Title Of Patent Date Issued
7494281 Slide type guide mechanism Feb. 24, 2009
6840718 Threaded hole finishing tool Jan. 11, 2005
6637989 Center locating feature in drill bit formed without a pointed tip Oct. 28, 2003
5800148 Blind-taper hole saw Sep. 1, 1998
5775853 Machining method and multi-function tool Jul. 7, 1998
5203652 Self-aligning tap and die wrench and universal threading tool Apr. 20, 1993
4749315 Tool for cutting a hole in a construction material precisely concentric to a reference aperture Jun. 7, 1988
4555203 Drilling machine Nov. 26, 1985
4380990 Portable core drill cutter for hard brittle sheets Apr. 26, 1983
4208229 System for repairing panes of glass Jun. 17, 1980
4090804 Circular drill with centering device May. 23, 1978











 
 
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