| 5328302 |
Air feed peck drill |
— |
1994-07-12 |
| 5295770 |
Air feed peck drill with pneumatic safety system |
Robert A. Pennison |
1994-03-22 |
| 5205681 |
Mechanical peck drill and method |
— |
1993-04-27 |
| 5149232 |
Mechanical peck drill |
— |
1992-09-22 |
| 5062745 |
Mechanical peck drill and method |
— |
1991-11-05 |
| 5054968 |
Mechanical positive feed drill with supported spindle |
— |
1991-10-08 |
| 5022798 |
Thrust-responsive two-speed drill and method of operation |
— |
1991-06-11 |
| 4702650 |
Positive feed drill use counter |
Robert F. Golwas, Robert A. Pennison |
1987-10-27 |
| 4688970 |
Power drill and automatic control system therefore |
— |
1987-08-25 |
| 4681490 |
Retraction apparatus for automatic feed drills or the like |
Robert A. Pennison |
1987-07-21 |
| D290220 |
Power tool reaction brace |
— |
1987-06-09 |
| 4631992 |
Screwdriver |
— |
1986-12-30 |
| 4631012 |
Pneumatic tools |
— |
1986-12-23 |
| 4592681 |
Retraction apparatus for automatic feed drills or the like |
Robert A. Pennison |
1986-06-03 |
| 4591299 |
Rapid feed apparatus for automatic feed drills or the like |
— |
1986-05-27 |
| 4495681 |
Dwell and depth attachment for power drills |
— |
1985-01-29 |
| 4258799 |
Inlet control valve |
— |
1981-03-31 |