| All Patents in class 408/239R |
Patents 61 -
70
of 70
      |
| Number | Date | Patentee | Title | Type |
| 3,988,965 | Nov. 02, 1976 | R.V. Fatke, O.W. Ehrhardt, D.J. Cayen | Two Pressure Counterbalance System for Machine Tool Headstocks | metalworking machine mechanisms |
| 4,211,510 | Jul. 08, 1980 | D.A. Hopkins | Adjustable Boring Head | boring heads |
| 4,398,326 | Aug. 16, 1983 | J.R. Joerger | Collet Unclamping Mechanism | metalworking machine mechanisms |
| 4,413,938 | Nov. 08, 1983 | S.R. Kuczenski | Spindle Motor Powered Drawbar | milling machine accessories |
| 4,750,850 | Jun. 14, 1988 | R.H. Husted | Collet release mechanism for milling machine | milling machine accessories |
| 4,786,221 | Nov. 22, 1988 | K.L. March | Quick release chuck mechanism and method for achieving interchange ability of tool inserts therein | tapping machines |
| 5,492,441 | Feb. 20, 1996 | H. Schürfeld | Clamping Device for Connecting Machine Spindles With Tool Holders | tool changers and storage mechanisms |
| 5,651,647 | Jul. 29, 1997 | J.R. Bennie | Auxiliary chuck and screwdriver for electric drills | handheld power tool accessories |
| 5,971,681 | Oct. 26, 1999 | I.E. Wolfe, R.J. Schroeder | Drawbar guide ring with drive keys | milling machine accessories |
| 6,000,888 | Dec. 14, 1999 | R.L. Hartman | Quick Coupler Mechanism for Power Tool Bits | |
