Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39842 | Temporary guard rail system | Harrison G. Purvis, Lonnie E. Arnold | 2007-09-18 |
| 5683074 | Temporary guardrail system | Harrison G. Purvis | 1997-11-04 |
| 5269304 | Electro-therapy apparatus | — | 1993-12-14 |