Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870989 | High temperature safety relief system | Cleo M. Bickford, Larry A. Sample | 1989-10-03 |
| 4865074 | High temperature safety relief system | Cleo M. Bickford, Larry A. Sample | 1989-09-12 |
| 4848397 | High temperature safety relief system | Cleo M. Bickford, Larry A. Sample | 1989-07-18 |