Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848335 | Return electrode contact monitor | — | 1989-07-18 |
| 4825168 | Remote conductivity sensor using square wave excitation | Francis T. Ogawa, George J. Eilers, Donn D. Lobdell, Terry D. Boucher | 1989-04-25 |