Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10018305 | Heater with replaceable cartridge | George M. Zimmer | 2018-07-10 |
| 9523498 | Heater for liquefied petroleum gas storage tank | George M. Zimmer, Jeffrey R. Ervin | 2016-12-20 |
| 8951041 | Heater for liquefied petroleum gas storage tank | George M. Zimmer, Jeffrey R. Ervin | 2015-02-10 |
| 5640930 | Automatic cleaning aquarium | — | 1997-06-24 |
| 5472049 | Hydraulic fracturing of shallow wells | Brent F. Chaffee, Brian J. Kelly, Jeffery W. Koepke | 1995-12-05 |
| D311103 | Display stand for baked goods and the like | — | 1990-10-09 |
| 4648215 | Method and apparatus for forming a high velocity liquid abrasive jet | Mohamed A. Hashish, Yih-Ho Michael Pao | 1987-03-10 |