Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738817 | Self-indicating direct tension indicator | David Sharp | 2020-08-11 |
| 9863457 | Direct tension indicating washer with offset protuberances and indentations | David Sharp | 2018-01-09 |
| 8197167 | Securing mechanisms for components of a load indicating fastener | Nicholas Strumbos, Robert E. Stewart | 2012-06-12 |
| 5015132 | Direct tension indicator washer | A. Craig Hood | 1991-05-14 |