Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356039 | Method for cleaning drains and waterways | — | 1982-10-26 |
| 4337096 | Method and implement for cleaning drains | — | 1982-06-29 |
| 4326893 | Implement and method for cleaning tubular drains | — | 1982-04-27 |
| 4218803 | Implement for cleaning tubular culverts | — | 1980-08-26 |
| 4216561 | Implement for cleaning box culverts | — | 1980-08-12 |