Issued Patents All Time
Showing 151–164 of 164 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4750708 | High strength ball valve seat assembly | Edward M. Yusko, Jr., Richard F. Wozniak | 1988-06-14 |
| 4735533 | Valve locking assembly | Michael T. Gallagher, Ray D. Linderman | 1988-04-05 |
| 4714235 | Constant displacement dual position cam stop assembly | Cal R. Brown, Michael T. Gallagher | 1987-12-22 |
| 4714237 | Soft seat for metering valve | Ray D. Linderman | 1987-12-22 |
| 4685488 | Ball valve | Susan E. Corbin, Cal R. Brown, David Crozier | 1987-08-11 |
| 4671308 | Fire-safe ball valve | Ulrich H. Koch, Timothy J. Francis | 1987-06-09 |
| 4660591 | Ball valve and seat assembly | Cal R. Brown, Michael T. Gallagher, Richard F. Wozniak | 1987-04-28 |
| 4635677 | Valve manifold mounting bracket | Ray D. Linderman | 1987-01-13 |
| 4602762 | Ball valve and seat assembly | Ulrich H. Koch | 1986-07-29 |
| 4572239 | High pressure ball valve | Ulrich H. Koch, Gilbert Lutz | 1986-02-25 |
| 4558874 | Valve stem packing assembly | Ulrich H. Koch, Edward M. Yusko, Jr., Thomas M. Mannion | 1985-12-17 |
| 4538790 | Valve stem packing assembly | Ulrich H. Koch, Edward M. Yusko, Jr., Thomas M. Mannion | 1985-09-03 |
| 4479513 | High pressure ball valve | Ulrich H. Koch, Gilbert Lutz | 1984-10-30 |
| 4410165 | Ball valve and seat assembly | Ulrich H. Koch | 1983-10-18 |