Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D348408 | Miniature electromechanical hour meter/counter | — | 1994-07-05 |
| D348019 | Hour meter | Stanislaw Kocol | 1994-06-21 |
| D332923 | Engine operating time hour meter | Nicholas G. Polydoris, Paul Mitchell, Stanislaw Kocol, James George | 1993-02-02 |
| 5121368 | Engine operating time measuring apparatus | Nicholas G. Polydoris, Paul Mitchell, Stanislaw Kocol, James George | 1992-06-09 |