Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311441 | Positive displacement device | Frederick Scragg, Michael L. Scragg | 1982-01-19 |
| 4233101 | Method of lining a pipe | Frederick Scragg | 1980-11-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311441 | Positive displacement device | Frederick Scragg, Michael L. Scragg | 1982-01-19 |
| 4233101 | Method of lining a pipe | Frederick Scragg | 1980-11-11 |