Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695726 | Removal of mercury and cadmium and their compounds from incinerator flue gases | — | 1997-12-09 |
| 5640834 | Packaging machine and method | Richard W. Hess, William M. Cronauer, Rick Steven Wehrmann, James D. Kramer | 1997-06-24 |
| 5607654 | Method for minimizing environmental release of toxic compounds in the incineration of wastes | — | 1997-03-04 |
| 5600360 | Thermal imprinter and method | William M. Cronauer | 1997-02-04 |