| All Patents in class 81/487 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 491,872 | Feb. 14, 1893 | C.W. Canfield | Sliding Friction Tongs | pipe tongs |
| 678,424 | Jul. 16, 1901 | M.C. Rodenberger | Tool Holder | tool holders |
| 1,062,448 | May 20, 1913 | H. Fish | Tool Holder | lathe tool holders and tool posts |
| 1,196,703 | Aug. 29, 1916 | H. Kraut | Tool | screw adjust wrenches |
| 1,200,158 | Oct. 03, 1916 | R. Barrett | Tool Holder | tool holders |
| 1,330,514 | Feb. 10, 1920 | W.C. Brooks | Tool-holder | grinding fixtures |
| 1,615,488 | Jan. 25, 1927 | J.A. Schleicher | Wrench and handle for inside micrometers | measurement gauges |
| 1,786,029 | Dec. 23, 1930 | J.H. Phillips | Tool Holder | tool holders |
| 2,043,442 | Jun. 09, 1936 | J.E. McNeil | Tool Holder | tool holders |
| 2,706,423 | Apr. 19, 1955 | C.W. Rose | Tool Holder | tool holders |
| 5,005,449 | Apr. 09, 1991 | D.L. Gatzemeyer, J.A. Sorensen | Hand Tool or Improved Bar Clamp | clamps |
| 5,197,360 | Mar. 30, 1993 | R.D. Wooster, Jr. | Adjustable clamp | bar and pipe clamps |
