Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4726901 | Cylindrical fibrous structures with graded pore size | David B. Pall, Colin F. Harwood, Arthur Bradley | 1988-02-23 |
| 4594202 | Method of making cylindrical fibrous filter structures | David B. Pall, Colin F. Harwood, Arthur Bradley | 1986-06-10 |