Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4249593 | Heat exchanger with leak detecting double wall tubes | George Bieberbach, Donald J. Bongaards, James M. Duke | 1981-02-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4249593 | Heat exchanger with leak detecting double wall tubes | George Bieberbach, Donald J. Bongaards, James M. Duke | 1981-02-10 |