Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D274852 | End panel insulator for a temperature-controlled rotary cylinder | Leland A. Withers, Sr., L. Andrew Withers, Jean D. Withers | 1984-07-24 |
| 4432526 | Support block assembly | L. Andrew Withers, William David Withers | 1984-02-21 |
| 4385453 | End panel insulator assembly for temperature controlled rotary cylinder | L. Andrew Withers, Leland A. Withers, Sr., Jean D. Withers | 1983-05-31 |
| 4385454 | Insulation blanket and band clamps | Jean D. Withers, L. Andrew Withers, Leland A. Withers, Sr. | 1983-05-31 |
| 4385455 | Rotary cylinder end wall insulator with seal | L. Andrew Withers, Leland A. Withers, Sr., Jean D. Withers | 1983-05-31 |