Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657786 | Zero dead-leg gas control apparatus and method | William K. Tucker | 1997-08-19 |
| 5657254 | Process gas distribution system and method with automatic transducer zero calibration | Dennis A. Sierk, Stephen G. Geist, Gregory L. Hayes | 1997-08-12 |