Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5478150 | Device for the continuous monitoring of the correct proportioning and mixing of at least two fluids | Wilhelm A. Keller | 1995-12-26 |
| D337134 | Light and sound emitting tossing ring | Rodney R. Scruggs | 1993-07-06 |
| D301489 | Clipboard for shopping cart push bar | Christopher A. Aquila | 1989-06-06 |
| 4470501 | Pullcord lockout device for a conveyor system | — | 1984-09-11 |
| 4302053 | Mounting block to rotate coal cutter bits | Wallace W. Roepke | 1981-11-24 |