Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882069 | Method for the treatment of sewage and other impure water | — | 1989-11-21 |
| 4724085 | Method for the clarification of sewage and other wastes | — | 1988-02-09 |
| 4576714 | System for the clarification of sewage and other liquid-containing wastes | — | 1986-03-18 |
| 4411458 | Stem securing means for conduits | Norman E. Strunk | 1983-10-25 |
| 4393992 | Sprinkler head assembly | Norman E. Strunk | 1983-07-19 |