| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 6 | |
| #2 | Germany | 3 | |
| #3 | France | 2 | |
| #4 | United States | 2 | |
| #5 | Canada | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Japan | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Furniture and games | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Venting or aerating devices | |
| #3 | Positive-displacement engines | |
| #4 | Swimming pools | |
| #5 | Vehicle transmission mounting | |
| #6 | Skates |
| # | Name | Total Patents |
|---|---|---|
| #1 | Petersson Ralf K E | 2 |
| #2 | Petersson R K E | 2 |
| #3 | Vejdemo Executor By Stephan | 1 |
| #4 | Sundin A E | 1 |
| #5 | Petersson Ralf Christer Ebbe | 1 |
| #6 | Petersson R C E | 1 |
| #7 | Petersson Ralf C E | 1 |
| #8 | Sundin M E | 1 |
| #9 | Sundins Fabriker Ab | 1 |
| #10 | Rarufu Kurisutaa Ebu Petason | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9009903A1 | An improved device for connecting and disconnecting hydraulic pumps | |
| CA1148059A | Close-off valve for suction pipes in hydraulic pumps | |
| US4345881A | Close-off valve for suction pipes in hydraulic pumps | |
| US4275998A | Piston pump | |
| FR2431043A1 | MULTIPLE PISTON PUMP ROTATING DISC CONTROLLED | |
| SE7810384L | Device related to cut-off valves for suction lines for hydraulic pumps | |
| GB1261692A | Reciprocating pumps | |
| DE2001781A1 | Piston pumps |