| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines | |
| #4 | Electrical machinery and energy | |
| #5 | Control | |
| #6 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gordon Carroll G | 13 |
| #2 | Stoesser William F | 3 |
| #3 | Cameron Robert R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4308888A | Pressure regulator | |
| US4114650A | Valve structure | |
| US3339572A | Electro-hydraulic servo valve | |
| US3354912A | Sectional hydraulic valve structure | |
| US3052263A | Hydraulic servo valves | |
| US3018795A | Electro-hydraulic servo valves | |
| US3076920A | Torque motors | |
| US3117594A | Electro-hydraulic servo valve | |
| US2961002A | Electro-hydraulic servo valve | |
| US2909126A | Rotary pump | |
| US2797677A | Shrouded valve guide | |
| US2822821A | Balanced fluid valve | |
| US2652473A | Electric butt welding |