Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11828050 | Garbage disposal access assembly | — | 2023-11-28 |
| 10717607 | Turnover mechanism of a conveyor system of a blast wheel machine | Shawn Douglas McBride, David Allen Hannusch | 2020-07-21 |
| 10584537 | Over-bit reamer | David G. Bullock | 2020-03-10 |
| 10519719 | Retractable auger head | David G. Bullock, Toby Wright, Thomas A. Miller, Boston Bullock | 2019-12-31 |
| 10301880 | Over-bit reamer | David G. Bullock | 2019-05-28 |
| 8662201 | End loaded beacon housing with a side access door | David G. Bullock | 2014-03-04 |
| 8544569 | Offset rock bit with pull back adapter | David G. Bullock | 2013-10-01 |
| 8122979 | Offset rock bit with pull back adapter | David G. Bullock | 2012-02-28 |
| 4999670 | Printer with print media support system | — | 1991-03-12 |
| 4295269 | Truss assembly apparatus | — | 1981-10-20 |