Stephens; Leonard J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stephens; Leonard J..The latest application filed is for "automatic center cavity equalizing valve".
- Stephens; Leonard J. - Raleigh NC
- Stephens; Leonard J. - Pittsburgh PA
| Patent | Date |
|---|---|
| Automatic center cavity equalizing valve Grant 6,016,826 - Bake , et al. January 25, 2 | 2000-01-25 |
| Globe valve and method for making same Grant 5,288,054 - Bake , et al. February 22, 1 | 1994-02-22 |
| Seal assembly for valves Grant 4,141,538 - Bake , et al. February 27, 1 | 1979-02-27 |
| Method of assembling valves Grant 4,047,275 - Bake , et al. September 13, 1 | 1977-09-13 |
| Valve handle Grant D242,921 - Bake , et al. January 4, 1 | 1977-01-04 |
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