| All Patents in class 173/93.6 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 2,225,091 | Dec. 17, 1940 | G.C. Wilhide | Portable power driven screw or bolt driving and nut running machine | handheld power drills |
| 2,566,183 | Aug. 28, 1951 | F.P. Forss | Portable power-driven tool | handheld power drivers |
| 2,707,892 | May 10, 1955 | M.P. Holmes | Impact-type Chuck Wrench | metal lathe accessories and attachments |
| 2,716,475 | Aug. 30, 1955 | W.G. Mitchell | Impact tools | |
| 2,747,447 | May 29, 1956 | A.C. Burleigh | Reversible rotary impact tool | handheld power drivers |
| 2,753,072 | Jul. 03, 1956 | W.G. Mitchell | Tool for installing tubular rivets | |
| 2,753,965 | Jul. 10, 1956 | F.A. Kaman | Impact tools | |
| 2,815,834 | Dec. 10, 1957 | A.W. Mall | Portable power tool drive mechanism | impact wrenches |
| 2,836,272 | May 27, 1958 | F.A. Kaman | Impact clutch | handheld power tools |
| 3,269,466 | Aug. 30, 1966 | W.G. Mitchell | Impact tool | impact chisels and drills |
| 3,366,187 | Jan. 30, 1968 | A.L. Von Tersch | Impact Driver | |
| 6,158,526 | Dec. 12, 2000 | R.D. DeRome, P.W. Griffin, A.P. Ghode | Reversible Impact Mechanism with Structure Limiting Hammer Travel | |
| 6,227,308 | May 08, 2001 | R.D. DeRome, P.W. Griffin, A.P. Ghode | Reversible Impact Mechanism with Structure Limiting Hammer Travel | |
