Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4736786 | Method for improving stength of gasifiable patterns | David V. Trumbauer, Terry L. Erion | 1988-04-12 |
| 4691754 | Method for forming castings having inserts | David V. Trumbauer, Terry L. Erion | 1987-09-08 |