Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322571 | Method and apparatus for cleaning hoses | Raymond G. Plummer, Mike Kosmyna, J. Thomas Schaffer | 1994-06-21 |
| 5287867 | Apparatus and method for insuring and controlling turbulent flow for cleaning ducts | Raymond G. Plummer, J. Thomas Schaffer | 1994-02-22 |