Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7210405 | Printer ink supply system with viscosity control | Danny R. Hessert, Tracy Kucaba | 2007-05-01 | $15,726,000 |
| D389534 | Train engine | — | 1998-01-20 | |
| D389535 | Train car | — | 1998-01-20 | |
| D372988 | Collapsible scaffolding extension | — | 1996-08-20 | |
| 5531084 | Key for rotary plug and cylinder lock, and method of forming the key | Timothy P. Laabs, Michael O. Misner, Elbert M. Spencer | 1996-07-02 | $184,000 |
| D371445 | Collapsible scaffolding | — | 1996-07-02 | |
| 5485735 | Key operated rotary plug and cylinder lock | Timothy P. Laabs, Michael O. Misner, Elbert M. Spencer | 1996-01-23 | $189,000 |
| 4892043 | Subsidiary bench top | — | 1990-01-09 | |
| 4874141 | Freezer bag supporting stand | — | 1989-10-17 | |
| 4782917 | Adjustable scaffold | — | 1988-11-08 | |
| 4693331 | Tractor boom | James A. Johnson, Vincent J. Tomlonovic | 1987-09-15 | |
| 4633689 | Anti-static switch lock with momentary position | Stanley C. Wolniak, Timothy P. Laabs | 1987-01-06 | $120,000 |
| 4267767 | Position lock | Gary D. Hodapp, Richard L. Peterson | 1981-05-19 |