Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231487 | Apparatus for stimulating hamstring contraction to effect optimum abdominal muscle conditioning | John P. Diamond, Jr. | 2001-05-15 |
| 6077205 | Linear motion apparatus for stimulating hamstring contraction to effect optimum abdominal muscle conditioning | John P. Diamond, Jr. | 2000-06-20 |
| D420070 | Abdominal exercise device | John P. Diamond, Jr., Keith L. Offenhauer | 2000-02-01 |
| 5957820 | Apparatus for stimulating hamstring contraction to effect optimum abdominal muscle conditioning | John P. Diamond, Jr., Keith L. Offenhauer | 1999-09-28 |