| All Patents in class 81/57.29 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 2,616,323 | Nov. 04, 1952 | L.A. Leifer | Power Actuated Wrench | metal lathe accessories and attachments |
| 4,620,459 | Nov. 04, 1986 | R.P. Singleton | Speed Socket Wrench | ratchet wrenches |
| 4,680,994 | Jul. 21, 1987 | R.P. Singleton | Socket Wrench With Reversing Ratchet | ratchet wrenches |
| 4,907,476 | Mar. 13, 1990 | R.P. Singleton | Socket Wrench With Improved Handle | ratchet wrenches |
| 5,142,952 | Sep. 01, 1992 | K.C. Happ, M.S. Scolaro, G.A. Putney | Ratchet Tool | |
| 5,231,901 | Aug. 03, 1993 | M.S. Scolaro, G.A. Putney | Ratchet Tool | |
| 6,311,584 | Nov. 06, 2001 | T.C. Chu | Ratchet wrench having an additional driving device | ratchet wrenches |
