Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D279921 | Washdown sprayer tank | John E. Blumer, Richard J. Ehmke | 1985-07-30 |
| 4469210 | Rotary chute for spreader | John E. Blumer | 1984-09-04 |
| 4367848 | Spreader | Richard J. Ehmke | 1983-01-11 |