Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5810927 | Ink temperature control | John E. Ayres | 1998-09-22 |
| 4329872 | High pressure hydraulic testing packer | Edmund Wardle | 1982-05-18 |
| 4322969 | Gas pressure relieving hydrostatic tester | Edmund Wardle | 1982-04-06 |
| 4305277 | Hydrostatic tester for plastic lined pipe and fiberglass pipe | Edmund Wardle | 1981-12-15 |