Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4634403 | Belt drive | Charles E. Grimes | 1987-01-06 |
| 4346494 | Brush structure | Bertil J. Sundberg | 1982-08-31 |
| D257845 | Sweeper | Robert D. Hennessey | 1981-01-13 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4634403 | Belt drive | Charles E. Grimes | 1987-01-06 |
| 4346494 | Brush structure | Bertil J. Sundberg | 1982-08-31 |
| D257845 | Sweeper | Robert D. Hennessey | 1981-01-13 |