Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D388953 | Expandable key safe | Thomas R. Steinhagen, Charles A. Haas, John E. Schenken | 1998-01-13 |
| D330995 | Drink holder | John E. Schenken, Charles A. Haas, Herbert O. Dixon, Jr. | 1992-11-17 |