Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 1999 | Invention patented by Edgar Lim on October 20th, 1999. Abstract: The exercise apparatus the AB Challenger Apparatus, is an exercise device which is comprised of light cylindrical straight and curved components, which are easily assembled by the use of cylindrical joints. The apparatus described herein is particularly recommended for strengthening all abdominal muscles, serratus anterior, chest muscles, anterior deltoids, flexor groups of the hand and leg muscles. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
