Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5794818 | Container for bulk materials | Robert A. Bromwell, Alan M. Imboden, Karl Sommer, Thomas G. Witkowski | 1998-08-18 |
| D394302 | Container for bulk materials | Robert A. Bromwell, Karl Sommer, Gerald L. Blake | 1998-05-12 |
| 5375741 | Container for bulk material and its method of manufacture | — | 1994-12-27 |
| 5373961 | Transportable, self-supporting container | Joseph J. Lane, Sidney H. Dunken | 1994-12-20 |
| D349944 | Container for bulk materials | — | 1994-08-23 |
| 5232120 | Container for bulk liquids and solids | Sidney H. Dunken, Joseph J. Lane | 1993-08-03 |
| 4899526 | Mower deck construction and method for making same | — | 1990-02-13 |
| D270201 | Conveyor module | William G. Hodlewsky, Roger H. Schroeder | 1983-08-16 |
| D270202 | Conveyor module | William G. Hodlewsky, Roger H. Schroeder | 1983-08-16 |
| 4337716 | Marine growth wiper | — | 1982-07-06 |