Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6468322 | Filter holder assembly having extended collar spacer ring | Mary Anne Alvin | 2002-10-22 |
| 6428593 | Filter holder gasket assembly for enhanced securement of candle filters | Mary Anne Alvin | 2002-08-06 |
| 6398837 | Metal-ceramic composite candle filters | Mary Anne Alvin, Dennis M. Bachovchin | 2002-06-04 |
| 6361575 | Multipurpose single external seal filter assembly for metallic and ceramic tube filters with integral locking means | Mary Anne Alvin, Eugene E. Smeltzer | 2002-03-26 |