Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4660866 | Restrained pipe joint | Lawrence S. Jones | 1987-04-28 |
| 4540204 | Restrained pipe joint | Robert M. Graham, Lawrence S. Jones, Andrew B. Malizio, George F. Rhodes | 1985-09-10 |
| 4532957 | Guides for gate valves | Lawrence S. Jones | 1985-08-06 |
| 4437242 | Flexible gauge for inside dimensions | — | 1984-03-20 |