Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827371 | Method and apparatus for ionizing gas with point of use ion flow delivery | — | 1989-05-02 |
| 4809127 | Self-regulating air ionizing apparatus | Arnold J. Steinman, Donald A. Gehlke | 1989-02-28 |