| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 6 | |
| #2 | Czechoslovakia | 3 | |
| #3 | USSR (Union of Socialist Soviet Republics) | 3 | |
| #4 | France | 2 | |
| #5 | United States | 2 | |
| #6 | Canada | 1 | |
| #7 | German Democratic Republic | 1 | |
| #8 | EPO (European Patent Office) | 1 | |
| #9 | Spain | 1 | |
| #10 | United Kingdom | 1 | |
| #11 | Italy | 1 | |
| #12 | Japan | 1 | |
| #13 | Netherlands | 1 | |
| #14 | Sweden | 1 | |
| #15 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Medical technology | |
| #5 | Furniture and games | |
| #6 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Internal-combustion piston engines | |
| #2 | Machines | |
| #3 | Unspecified technologies | |
| #4 | Rotary-pistons | |
| #5 | Venting or aerating devices | |
| #6 | Physical therapy devices | |
| #7 | Games | |
| #8 | Weapon sights |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gerber Alfred | 7 |
| #2 | Sparro Francesco | 6 |
| #3 | Gerber Alfred Dr Ing | 3 |
| #4 | Sparro F | 2 |
| #5 | Wankel Felix | 2 |
| #6 | Alfred Gerber | 2 |
| #7 | Sparro Franchesko | 2 |
| #8 | Gerber A | 2 |
| #9 | Holliger Walter | 1 |
| #10 | Furanshisuko Suparo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0007301A1 | Valve | |
| SU1190997A3 | Multicylinder positive-displacement piston machine | |
| CS216913B2 | Multicylinder piston motor | |
| CH624452A5 | Multi-cylinder reciprocating piston engine, especially internal combustion engine | |
| CH620737A5 | Multi-cylinder reciprocating piston engine, especially an internal combustion engine | |
| CH620738A5 | Multi-cylinder reciprocating piston engine, especially an internal combustion engine | |
| GB608044A | Aiming device for weapons intended for use against moving targets, particularly aircraft |