| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | Patent number: | Patent Date: |
| Patents for Conrad A. Koehler | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 292,437 | Jan. 22, 1884 | C.A. Koehler, C. Vogel | Instrument for Attaching Buttons | button attaching tools | |