Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D446225 | Cab structure for a forestry swing machine | John F. Brandenburg, III | 2001-08-07 |
| D438878 | Cab structure for a forestry swing machine | John F. Brandenburg, III | 2001-03-13 |
| 5511688 | Vending machine dispensing system | David W. Duncan, Kenneth W. Oden | 1996-04-30 |
| 5182872 | Sound producing control switch for a picture-frame | Jack Kao | 1993-02-02 |