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| Number | Title | Issue Date |
| 7237760 | Check valve actuator A check valve actuator has a body, a sliding seat, a drive shaft, a spring assembly and a knob. The body has a mounting collar, a convex ridge, an internal cavity and a through hole. The mounting collar is formed on the front end of the body and has an internal surf... | 07/03/2007 |
| 5370359 | Manual seal coupler A coupler for connecting the service port of a refrigeration fluid-containing system to an exit conduit has a stem threadably for axial movement within the coupling body between a first open position when fully advanced and a second closed position when f... | 12/06/1994 |
