Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810854 | Compact portable vaporizer | William J. DiGirolamo | 1989-03-07 |
| 4683369 | Hand held electric hair dryer | Roger A. Rieckman, William R. Hemrich, George C. Crowley | 1987-07-28 |
| D287274 | Humidifier | George C. Crowley | 1986-12-16 |
| 4198556 | Hair dryer | George C. Crowley | 1980-04-15 |