| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 11 | |
| #2 | Germany | 6 | |
| #3 | Austria | 4 | |
| #4 | Netherlands | 4 | |
| #5 | Norway | 3 | |
| #6 | Italy | 2 | |
| #7 | Japan | 2 | |
| #8 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Servomotors | |
| #3 | Unspecified technologies | |
| #4 | Machines | |
| #5 | Pipe-line systems | |
| #6 | Unspecified technologies | |
| #7 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shafer Homer John | 11 |
| #2 | Hoomaa Jiyon Shieefuaa | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE2900524A1 | PISTON LINEAR ACTUATOR FOR TRANSMISSION OF ROTATING MOTIONS | |
| JPS5240278A | Piston operating device for imparting rotary motion | |
| ATA680576A | Housing for a piston linear drive | |
| GB1197549A | Lubricant Seal for Rotary Valve | |
| GB1078990A | Oscillating vane hydraulic actuators | |
| GB1032596A | Improvements in fluid flow control valves | |
| GB1038614A | Ball valve construction | |
| GB868920A | Piston valve | |
| GB808326A | Improvements in semi-rotary motors |