| Patents for Walter Allen |
Patents 1 -
10
of 19
      |
| Picture | Number | Date | Patentee | Title |
| | 132,804 | Nov. 05, 1872 | O.A. Haynes, E. Cliff | Improvement in Lathe Dogs |
 | 141,828 | Aug. 12, 1873 | A.M. Strattan | Crozing and Chamfering Plane |
 | 148,716 | Mar. 17, 1874 | W. Kuck | Improvement in Metal-Drilling Machines |
 | 203,822 | May 21, 1878 | D. Fisher | Pipe-Wrench |
 | 212,795 | Mar. 04, 1879 | D. Fisher | Pipe and Nut Wrench |
 | RE8,867 | Aug. 19, 1879 | P.H. Kells | Improvement in brick-machines |
 | 231,557 | Aug. 24, 1880 | W.H. Glover | Monkey Wrench |
 | 278,911 | Jun. 05, 1883 | A.H. Emery | Dynamometer |
 | 278,912 | Jun. 05, 1883 | A.H. Emery | Dynamometer |
 | 278,913 | Jun. 05, 1883 | A.H. Emery | Weighing-machine and dynamometer |
