Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 2001 | Invention patented by Thomas M. Bradshaw on September 4th, 2001. Abstract: A saw that uses an extension arbor that fits over the existing arbor to hold a dado blade. The extension arbor is held in place by a locking bolt that passes through a bushed brace that is secured to the guard. In this way, both ends of the extension arbor are supported, providing strength and stability of the saw. The saw has a larger base plate and guard to accommodate the wider blades. Any type of standard dado blade may be used with the extension arbor. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.