Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7922384 | Device for transporting sticky or wet material | Gerrit Van Voorthuysen | 2011-04-12 |
| 7664273 | Approach for controlling audio signals in remote location | Steve Christensen, Robert P. Farinelli, Randy Fisher | 2010-02-16 |
| 4944056 | Method and apparatus for transporting a disabled person | Roger A. Schroeder, Robert H. Broyden, Robert C. Dearstyne, Joseph L. Magner, Randall J. Gephart +1 more | 1990-07-31 |
| 4636962 | Microprocessor-controlled hoist system | Robert H. Broyden, Douglas E. Schenk | 1987-01-13 |
| 4326173 | Digital phase locked loop frequency control system | — | 1982-04-20 |
| 4272761 | Operations control system | — | 1981-06-09 |
| 4254482 | Echo location system which provides for measuring liquid level and flow rate and flow volume of flowing liquids | — | 1981-03-03 |
| 4217777 | Flow measuring system | — | 1980-08-19 |