Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673563 | Pressure relief apparatus and method of use particularly for a refrigeration system | Luther D. Albertson, Walter R. Key | 1997-10-07 |
| 5644930 | Mechanical pressure relief valve having a variable position outlet | Luther D. Albertson, Walter R. Key | 1997-07-08 |