Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35879 | Cleaning method using both wet and dry steam, and apparatus adapted therefor | John L. Donahue, Donald J. Gillette, Bedrich Hajek | 1998-08-25 |
| 5275849 | Cleaning method using both wet and dry steam, and apparatus adapted therefor | John L. Donahue, Donald J. Gillette, Bedrich Hajek | 1994-01-04 |