| Patents for Lewis C. Heermann |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 419,884 | Jan. 21, 1890 | F.H. Richards | Milling-machine vise | metalworking machine vises |
| 421,517 | Feb. 18, 1890 | F.H. Richards | Drilling Machine | drill presses |
| 440,740 | Nov. 18, 1890 | F.H. Richards, C.H. Cooley | Scale-beam for grain-weighers | |
| 441,199 | Nov. 25, 1890 | S.D. Shambarger | Wrench | quick adjust wrenches |
| 442,720 | Dec. 16, 1890 | F.H. Richards | Grain-weigher | |
| 443,569 | Dec. 30, 1890 | C.H. Cooley | Grain-weigher | |
| 443,718 | Dec. 30, 1890 | F.H. Richards | Grain-weigher | |
| 443,933 | Dec. 30, 1890 | F.H. Richards, C.H. Cooley | Grain-weigher | |
