Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7623772 | Multi-function heat exchanger | William C. Stumphauzer | 2009-11-24 |
| 7221859 | Multi-function heat exchanger | William C. Stumphauzer | 2007-05-22 |
| 5687754 | Automatic drain valve with internal pressure booster valve | Leonard R. Nemeth, William S. Stumphauzer | 1997-11-18 |
| 5660509 | Key duplicating machine with bottom clearance | Stephan W. Cole, Ronald B. Berringer, Eric R. Hammonds, Michael Koubek, Anthony Nicholas +4 more | 1997-08-26 |
| 5651586 | Laterally adjustable armrest for a chair | — | 1997-07-29 |
| 5549037 | Gas generator attachment | William C. Stumphauzer, John Duncan | 1996-08-27 |
| D369747 | Dispenser cap | James B. Naylor | 1996-05-14 |
| 5460846 | Process and apparatus for rapidly carbonating a liquid beverage using a single pressure vessel | William C. Stumphauzer | 1995-10-24 |
| 5417237 | Automatic drain valve | William C. Stumphauzer | 1995-05-23 |
| 5260081 | Process and apparatus for rapidly carbonating a liquid beverage | William C. Stumphauzer | 1993-11-09 |
| 5192513 | High speed process and apparatus for carbonating water | William C. Stumphauzer, L. Scot Duncan | 1993-03-09 |
| 4890561 | Extendable keyboard support assembly | James Hampshire, John Collins | 1990-01-02 |
| 4712740 | Venturi spray nozzle for a cleaning device | L. Scot Duncan, John Collins | 1987-12-15 |
| 4637322 | Adjustable computer work table | James Hampshire, John Collins | 1987-01-20 |
| D286456 | Fold down wheels for carpet cleaner | — | 1986-10-28 |
| 4575007 | Mixing control for water and cleaning fluid | Peter A. Basile | 1986-03-11 |
| 4570856 | Liquid and detergent mixing chamber and valves | John Collins | 1986-02-18 |
| 4559666 | Air-liquid separator for cleaning devices | L. Scot Duncan, Peter A. Basile | 1985-12-24 |
| 4558823 | Spotting control and trigger assembly | — | 1985-12-17 |
| 4558484 | Tank unit for cleaning devices | — | 1985-12-17 |
| 4392614 | Portable paint sprayer | John Vogel | 1983-07-12 |
| 4350257 | Kit for assembling toolbox adapted for installation in back of pickup truck and method of assembling the toolbox | L. Scot Duncan | 1982-09-21 |
| 4275651 | Compactor refuse and other materials | Guilbert M. Hunt, Ronald E. Shaner | 1981-06-30 |
| 4231668 | Liquid power driven coating apparatus | John Vogel, Guilbert M. Hunt | 1980-11-04 |