| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 8 | |
| #2 | EPO (European Patent Office) | 7 | |
| #3 | United States | 7 | |
| #4 | Canada | 6 | |
| #5 | Switzerland | 5 | |
| #6 | Japan | 5 | |
| #7 | Australia | 3 | |
| #8 | Argentina | 2 | |
| #9 | Brazil | 2 | |
| #10 | Czechoslovakia | 2 | |
| #11 | German Democratic Republic | 2 | |
| #12 | Hungary | 2 | |
| #13 | Poland | 2 | |
| #14 | China | 1 | |
| #15 | Germany | 1 | |
| #16 | Mexico | 1 | |
| #17 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #18 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Lubricating of machines | |
| #3 | Pistons and sealings | |
| #4 | Machines | |
| #5 | Internal-combustion piston engines | |
| #6 | Unspecified technologies | |
| #7 | Servomotors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frey Bernhard | 38 |
| #2 | Frey B | 9 |
| #3 | Berunharudo Furai | 4 |
| #4 | Frej Bernard | 1 |
| #5 | Benharudo Furai | 1 |
| #6 | Bernhard F | 1 |
| #7 | Frey Bernard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5842343A | Hydraulic axial discharge pump | |
| ZA9305640B | Axial piston machine, in particular axial piston pump or axial piston motor | |
| CH651900A5 | Piston/cylinder arrangement having a seal liable to leakage | |
| CA1166170A | Method and device for feeding lubricant to a cylinder-piston arrangement | |
| CH645435A5 | Piston pump. | |
| CH639737A5 | Seal on a piston cylinder assembly. | |
| DE2914695A1 | PISTON CYLINDER ARRANGEMENT | |
| CH642726A5 | Seal on a piston cylinder assembly. | |
| CH642145A5 | Method and device for delivering lubricants to a piston-cylinder arrangement. |