Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649767 | Baffle liner | David Kellenberger, Norwin C. Derby | 1997-07-22 |
| 5647832 | Apparatus for manufacturing baffle liners | Vincent Edwin Durden, Norman C. Derby | 1997-07-15 |
| 5618255 | Method for manufacturing a baffle liner | Vincent Edwin Durden, Norman C. Derby | 1997-04-08 |