Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820749 | Large, stationary, modular aggregate processing plant and method of manufacturing and installing same | William R. Gray | 2004-11-23 |
| 6540089 | Large, stationary, modular aggregate processing plant and method of manufacturing and installing same | William R. Gray | 2003-04-01 |
| 6123279 | Rock crusher having crushing-enhancing inserts, method for its production, and method for its use | Robert G. Stafford, William R. Gray, Herbert E. Jakob | 2000-09-26 |
| 5967431 | Rock crusher having crushing-enhancing inserts, method for its production, and method for its use | Robert G. Stafford, William R. Gray, Herbert E. Jakob | 1999-10-19 |
| 5899630 | Paving machine employing exhaust heat exchanger for screed heating | — | 1999-05-04 |
| 5378060 | Combustion chamber having reduced NO.sub.X emissions | Erbie G. Mize, Malcom L. Swanson | 1995-01-03 |
| 5334012 | Combustion chamber having reduced NO.sub.x emissions | Erbie G. Mize, Malcom L. Swanson | 1994-08-02 |
| 5201472 | Method for preparing and storing a recyclable shingle material | — | 1993-04-13 |
| 4867572 | Asphalt plant with fixed sleeve mixer | James G. May | 1989-09-19 |