Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018987 | Apparatus for measuring gas transmission through container closures | Daniel W. Mayer | 2000-02-01 |
| 5363987 | Newspaper vending unit | Danny E. Crawford, Gene A. Hall, Dennis A. Jendro, Dennis P. Rolph, Danny L. Nelson +5 more | 1994-11-15 |
| 5159829 | Device for measuring gas permeation | Daniel W. Mayer | 1992-11-03 |
| 5107696 | Device for measuring gas permeation | Daniel W. Mayer | 1992-04-28 |