Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054463 | Power spring bow | David E. Colley, Donald G. Fain | 1991-10-08 |
| 4903677 | Power spring bow | David E. Colley, Donald G. Fain | 1990-02-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054463 | Power spring bow | David E. Colley, Donald G. Fain | 1991-10-08 |
| 4903677 | Power spring bow | David E. Colley, Donald G. Fain | 1990-02-27 |