Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4253520 | Heat exchanger construction | Johan A. Friedericy, James R. Lohay | 1981-03-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4253520 | Heat exchanger construction | Johan A. Friedericy, James R. Lohay | 1981-03-03 |