Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6210121 | Method of calibrating a lost-motion metering pump | Henry K. Sprenger, Joel E. Higbee | 2001-04-03 |
| 6155136 | Gear shaft assembly and method of making the same | Joel E. Higbee, Henry K. Sprenger | 2000-12-05 |
| 6094970 | Leak detector for a pump | Henry K. Sprenger, Joel E. Higbee | 2000-08-01 |