Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869962 | Asbestos-like structures | Francis P. McCullough, Jr., Eckel R. Lane, David M. Hall | 1989-09-26 |
| 4857394 | Flame retardant foams | Francis P. McCullough, Jr., R. Vernon Snelgrove | 1989-08-15 |