Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148902 | Multiple die casting machines with single vacuum source | Edward M. Nelson, Walter H. Yelczyn, David M. Regenauer | 2000-11-21 |
| 6082438 | Method and system for the control of a vacuum valve of a vacuum die casting machine | Edward M. Nelson | 2000-07-04 |