Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6334441 | Phonation valve for breathing tube | John Zowtiak, Tony Wondka | 2002-01-01 |
| 4639322 | Biopolymer compositions having enhanced filterability | Donald D. Beck, James W. Miller, William C. Wernau | 1987-01-27 |
| 4582705 | Composition for detoxification | Leonard Primes | 1986-04-15 |
| 4545527 | Railroad grade crossing | — | 1985-10-08 |
| 4245225 | Ink jet head | Gary L. Fillmore, Arthur R. Hoffman | 1981-01-13 |