Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889629 | Filter panel with parallel passages and mechanical filter screen comprising same | — | 1989-12-26 |
| 4814076 | Self-cleaning filter for insertion into a pressurized pipe | — | 1989-03-21 |
| 4806242 | Self-cleaning filter | — | 1989-02-21 |
| 4806243 | Self-cleaning filter and steam condenser inlet water box comprising same | — | 1989-02-21 |