Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9726162 | Submersible water circulation system for enclosed tanks | Douglas P. Walter, Joel J. Bleth, Willard R. Tormaschy, Jonathan L. Zent | 2017-08-08 |
| 9586184 | Air-powered water circulation systems for ponds, lakes, municipal water tanks, and other bodies of water | Joel J. Bleth, Douglas P. Walter, Jonathan L. Zent, Willard R. Tormaschy | 2017-03-07 |