| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | United Kingdom | 6 | |
| #3 | Canada | 5 | |
| #4 | Germany | 5 | |
| #5 | France | 5 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Electrical machinery and energy | |
| #5 | Control | |
| #6 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Servomotors | |
| #4 | Pistons and sealings | |
| #5 | Machines | |
| #6 | Accessories for machine tools | |
| #7 | Electric switches | |
| #8 | Systems controlling non-electric variables | |
| #9 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Aslan Wilfred | 14 |
| #2 | Wilfred Aslan | 6 |
| #3 | Greenwood Martin | 2 |
| #4 | Parrington Frank J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3565101A | Pneumatic amplifier valve | |
| US3512422A | Rotary actuator | |
| US3559687A | Fluid valve construction | |
| FR1493855A | Check valve | |
| FR1491015A | Flow control valve | |
| FR1477024A | Hydraulic distributor | |
| US3441249A | Flow control valve | |
| US3421547A | Check valve mechanism | |
| US3324892A | Metering device | |
| US3375850A | Fluid valve construction | |
| FR1379846A | Pneumatic or hydraulic cylinders | |
| US3247767A | Fluid cylinder | |
| US3168014A | Mounting arrangement for hydraulic piston and cylinder | |
| US3060969A | Hydraulic valve | |
| US3060970A | Fluid valve construction | |
| US2722854A | Pneumatic drill unit | |
| CA798180A | Flow control valves | |
| CA810939A | Fluid valve construction | |
| CA897026A | Pneumatic amplifier valve | |
| CA815320A | Check valve mechanism |