Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9568406 | Portable brinell hardness tester with stented through bore pumping chamber | — | 2017-02-14 |
| D729613 | Stroke limiter bracket | — | 2015-05-19 |
| D722900 | Metal hardness tester block having an alphanumeric platted grid | — | 2015-02-24 |
| D709353 | Maintenance support for a test head removed from a portable Brinell metal hardness tester | — | 2014-07-22 |
| 8590367 | Portable Brinell hardness tester | — | 2013-11-26 |
| D661969 | Pressure release lever | — | 2012-06-19 |
| 4945490 | Brinell hardness indicator with digital readout | John D. Laessig, John B. Oehrle | 1990-07-31 |
| D304427 | Hardness testing block | — | 1989-11-07 |
| D283599 | Material hardness tester or similar article | Henry W. Wessells, III | 1986-04-29 |