Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4265955 | Honeycomb core with internal septum and method of making same | Marlyn F. Harp, James L. Diepenbrock, Jr. | 1981-05-05 |
| 4257998 | Method of making a cellular core with internal septum | James L. Diepenbrock, Jr., Marlyn F. Harp | 1981-03-24 |