Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849066 | Method for selectively etching integral cathode substrate and support utilizing increased etchant turbulence | Samuel B. Deal, Donald W. Bartch | 1989-07-18 |
| 4441957 | Method for selectively etching integral cathode substrate and support | Donald W. Bartch | 1984-04-10 |