Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7270706 | Roll crusher to produce high purity polycrystalline silicon chips | Douglas Andrejewski, Terence Lee Horstman, Roger Dale Spencer, Jr. | 2007-09-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7270706 | Roll crusher to produce high purity polycrystalline silicon chips | Douglas Andrejewski, Terence Lee Horstman, Roger Dale Spencer, Jr. | 2007-09-18 |