Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7108418 | Bearing seal assembly for concrete auger mixer and method for using same | David M. Crall, Max W. Gilmore, Leland Goode, Gary L. Ruble | 2006-09-19 |
| 5316197 | Feeder for adding fibrous material to a conveyor having concrete ingredients | Hugh J. Tobler, Robert B. Sawdon | 1994-05-31 |
| 5284578 | Apparatus for treating sludge | Hugh J. Tobler | 1994-02-08 |
| 5277825 | Method for treating sludge | Hugh J. Tobler | 1994-01-11 |
| 4981600 | Method and means for treating sludge | Hugh J. Tobler | 1991-01-01 |
| 4907890 | Portable-concrete mixing device and method for using same | — | 1990-03-13 |