Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5454755 | Window ventilator | Thomas Schaffner | 1995-10-03 |
| 5259076 | Winterizing device for inground swimming pools | Terrance R. Voight, Wayne H. Steinfieldt | 1993-11-09 |
| 5249314 | Water closet volume reducer | Harry G. Knipe, John E. Plumridge | 1993-10-05 |