| All Patents in class 81/900 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 2,782,823 | Feb. 26, 1957 | D.E. Williams, Jr. | Magnetic screw driver | screwdriver bits and holders |
| 2,838,082 | Jun. 10, 1958 | C.A. Lange | Magnetic driving tool | screwdriver bits and holders |
| 5,259,277 | Nov. 09, 1993 | G.A. Zurbuchen | Electrically Insulating Composite Hand Tool | |
| 5,271,300 | Dec. 21, 1993 | P.M. Machmeier, G.A. Zurbuchen | Composite Hand Tool | nut wrenches |
| 5,448,932 | Sep. 12, 1995 | P.M. Machmeier, G.A. Zurbuchen | Composite Hand Tool | nut wrenches |
| 5,713,251 | Feb. 03, 1998 | G. Ulics, D.J. Iwinski, G.A. Zurbuchen | Composite Box Wrench with Ratchet Module Insert | ratchet wrenches |
| 5,791,211 | Aug. 11, 1998 | D.A. Burda, B. Bondhus, M.D. Blackston, J.R. Bondhus, M.L. Petroske | Folding hand tool set | wrench set holders |
| 5,970,826 | Oct. 26, 1999 | G. Ulics, G.A. Zurbuchen, M.E. DeVecchis, D.J. Iwinski | Composite socket with double inserts | wrench sockets |
| 5,970,828 | Oct. 26, 1999 | M.L. Petroske, D.A. Burda, B. Bondhus, M.D. Blackston, J.R. Bondhus | Folding hand tool set | wrench set holders |
| 6,318,216 | Nov. 20, 2001 | S.T. Spracklin, M.Q. Thompson, M.E. DeVecchis, D.M. Eggert | Composite Box Wrench with Reinforcing and Retaining Structure | nut wrenches |
| 6,427,563 | Aug. 06, 2002 | D.D. Curry, R.N. Wabalickis, G.A. Zurbuchen | Insulating Composite Hollow Shaft Tool | |
