Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5918773 | Combined water purifier/dispenser and walk-in cooler | Christine J. Donovan, Larry D. Birge | 1999-07-06 |
| 4781759 | Limestone and clay traction aid | — | 1988-11-01 |
| 4671208 | Clay and limestone composition | — | 1987-06-09 |
| RE31267 | Method for the containment of oils and oil sludges | Allen C. Edgar | 1983-06-07 |