Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4623277 | Self-tightening shaft coupler | Alex Wayne, Mark Bartel | 1986-11-18 |
| 4570858 | Coated spray nozzle tips | Joseph B. Ryan, Jr., Mark Bartel | 1986-02-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4623277 | Self-tightening shaft coupler | Alex Wayne, Mark Bartel | 1986-11-18 |
| 4570858 | Coated spray nozzle tips | Joseph B. Ryan, Jr., Mark Bartel | 1986-02-18 |