Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344074 | Dispensing apparatus having a removable variable proportioning and metering device | John R. Spriggs, James D. Decker, James L. Copeland | 1994-09-06 |
| 4733798 | Method and apparatus for controlling the concentration of a chemical solution | Daniel F. Brady, David B. Ziegler, Charles B. Johnson | 1988-03-29 |
| 4571327 | Solid cast detergent dispenser with insert for holding noncompatible chemical | Richard H. Johnson, Thomas L. Hennemann, James L. Copeland | 1986-02-18 |
| 4426362 | Solid block detergent dispenser | James L. Copeland, Peter J. Fernholz, Duane L. Salmonson, Michael D. Weick | 1984-01-17 |