Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6270542 | Home and industrial heating furnace that produces fuel gas | — | 2001-08-07 |
| 4712012 | Charge conversion unit for negative ion source | — | 1987-12-08 |
| 4616157 | Injector for negative ions | Kenneth H. Purser | 1986-10-07 |