Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33045 | Router guide unit | by Marlene J. Gronholz, administrator | 1989-09-05 |
| 4657570 | Air filter device | Kirk A. Schneider, James R. Scott | 1987-04-14 |
| 4617122 | Crimp seal pleated filter assembly | Barbara Kruse, Darrell D. Gronli | 1986-10-14 |
| 4512891 | Pleated filter element with controlled expansibility and frame therefor | Mervin E. Wright | 1985-04-23 |