| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Control | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Backe Bengt S | 5 |
| #2 | Backe Bengt Soren | 3 |
| #3 | Durham Lamoyne W | 3 |
| #4 | Durham La Moyne W | 2 |
| #5 | Durham La Moyne Warner | 2 |
| #6 | Frushour Russel E | 1 |
| #7 | Costello Otto A | 1 |
| #8 | Durham Moyne Warner | 1 |
| #9 | Carmen Bruce Wayne | 1 |
| #10 | Farekas Stephen E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4790233A | Method and apparatus for controlling hydraulic systems | |
| US4789001A | Operating system for a valve | |
| US4752867A | Control circuitry for electric drives | |
| US4658859A | Valve spool with cross drill ports | |
| US4706456A | Method and apparatus for controlling hydraulic systems | |
| US3999264A | Automatic turret head | |
| GB925338A | Drill presses | |
| CA682732A | Feeding mechanism for machine tools |