Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6922956 | Floating cover | Burton Johnson | 2005-08-02 |
| 6505445 | Floating cover | Burton Johnson | 2003-01-14 |
| 4647335 | Apparatus for making cast in place top clamp bar gasket | — | 1987-03-03 |