Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869622 | Feed hopper design | James A. Salter, James J. McCusker, Charles M. Arbore, Hendricus A. Dirkse, Rudi Everts +2 more | 1989-09-26 |
| 4865627 | Method and apparatus for separating fine particulates from a mixture of fine particulates and gas | Thomas S. Dewitz, Louis H. Turner, III, Johannes E. G. Ploeg, Matheus M. van Kessel, Rudi Everts | 1989-09-12 |
| 4830545 | Feed line design | James A. Salter, Thomas S. Dewitz, Hendricus A. Dirkse, Johannes W. van der Meer | 1989-05-16 |
| 4809886 | Apparatus for controlling a flow of granular material | Hendrik A. Dirkse, Wiecher Derk Evert Steenge | 1989-03-07 |