Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360198 | Valve for clean chemical reactor | Morris E. Gruver, III | 1994-11-01 |
| 5275501 | Quick opening manhole cover assembly for use with virtually any shape manhole cover | Robert R. Loomis | 1994-01-04 |