Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978753 | Automated combustion chamber decarboning squid | Richard Augustus, Harold E. Erwin | 2005-12-27 |
| 6886664 | Automotive fluid exchange system | Harold E. Erwin | 2005-05-03 |
| 6536486 | Brake flush method | Harold E. Erwin | 2003-03-25 |
| 6481469 | Indicator for use on fluid dispensing tank | Harold E. Erwin | 2002-11-19 |
| 6443192 | Vehicle brake flush method and apparatus | Harold E. Erwin | 2002-09-03 |