Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5715928 | Coin chute for a slot type machine and method therefor | — | 1998-02-10 |
| 4726901 | Cylindrical fibrous structures with graded pore size | David B. Pall, Colin F. Harwood, Timothy R. Brennan | 1988-02-23 |
| 4594202 | Method of making cylindrical fibrous filter structures | David B. Pall, Colin F. Harwood, Timothy R. Brennan | 1986-06-10 |
| 4214916 | Thin film photovoltaic converter and method of preparing same | Hal C. Felsher, Fred H. Pollak | 1980-07-29 |