Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8033067 | Multi-level apartment building | — | 2011-10-11 |
| 7540120 | Multi-level apartment building | — | 2009-06-02 |
| 6622441 | Window frame system | — | 2003-09-23 |
| 6412239 | Window frame system | — | 2002-07-02 |
| 5721577 | Large capacity ink cartridge | Bruce H. Ostermeier | 1998-02-24 |
| 4527584 | Automatic condensation discharger | — | 1985-07-09 |