| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | Denmark | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Rotary-pistons | |
| #3 | Unspecified technologies | |
| #4 | Pipes | |
| #5 | Servomotors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stratman Paul E | 4 |
| #2 | Mcdermott Hugh L | 2 |
| #3 | Stratman P E | 1 |
| #4 | Mc Dermott H | 1 |
| #5 | Pooru Ii Sutoreitoman | 1 |
| #6 | Mcdermott Hugh Louis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4013388A | Support means for floating rotary ring member | |
| GB1398370A | Rotary pump and valve assembly | |
| CA985128A | Pump and valve means | |
| DE2355746A1 | Gear pump for hydraulic system - has valve chamber with spring loaded valves arranged for reversible operation | |
| US3792710A | Pump and valve means | |
| US3674051A | Hydraulic coupler |