Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073429 | Door panel | David M. Steinke, Michael G. Blankenship, Marshall G. Satterfield | 1991-12-17 |
| 4996090 | Door panel | David M. Steinke, Michael G. Blankenship, Marshall G. Satterfield | 1991-02-26 |