Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9403209 | Methods for sand core gas evacuation and related systems and apparatus | Christopher D. Cogan, James T. Singer, Maurice G. Meyer, David D. Goettsch | 2016-08-02 |
| 8418745 | Pour ladle for molten metal | Christopher D. Cogan, Qigui Wang | 2013-04-16 |
| 8327915 | Pour ladle for molten metal | Christopher D. Cogan, Qigui Wang | 2012-12-11 |