Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7536831 | Rotatable building | Frank W. Ratliff, David A. Berg, Michael L. Rogers | 2009-05-26 |
| 7107725 | Swivel joint apparatus and method for utility supply to a rotatable building | Frank W. Ratliff | 2006-09-19 |
| 7032353 | Swivel joint apparatus and method for utility supply to a rotatable building | Frank W. Ratliff | 2006-04-25 |
| 6742308 | Swivel joint apparatus and method for utility supply to a rotatable building | Frank W. Radlitt | 2004-06-01 |