| Patents for C. F. Keller |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 444,923 | Jan. 20, 1891 | C.F. Spery | Pipe Tongs | pipe wrenches |
| 450,676 | Apr. 21, 1891 | T. Newman | Pipe Wrench | pipe wrenches |
| 450,972 | Apr. 21, 1891 | T. Newman | Pipe Wrench | pipe wrenches |
| 454,222 | Jun. 16, 1891 | J.A. Miller | Wrench | quick adjust wrenches |
| CA-37,074 | Jul. 28, 1891 | T. Newman | Pipe Wrench | pipe wrenches |
| 470,626 | Mar. 08, 1892 | W.J. Walker | Wrench | quick adjust wrenches |
| 478,948 | Jul. 12, 1892 | A. Bareis | Pipe Wrench | alligator wrenches |
| 480,140 | Aug. 02, 1892 | J.F. Sauerman | Chain Pipe Wrench | chain and strap wrenches |
| 482,109 | Sep. 06, 1892 | W.J. Walker | Pipe Wrench | quick adjust wrenches |
| 484,575 | Oct. 18, 1892 | E. Wetterhahn | Mechanic's Square | squares |
| 489,327 | Jan. 03, 1893 | W. Rathbone | Vise | |
| 491,255 | Feb. 07, 1893 | W.J. Walker | Pipe Wrench | quick adjust wrenches |
| 499,863 | Jun. 20, 1893 | A.L. Bedford, W.J. Walker | Vehicle Wrench | axle nut wrenches |
