| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 8 | |
| #2 | Germany | 5 | |
| #3 | Austria | 1 | |
| #4 | Denmark | 1 | |
| #5 | Finland | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Controlling combustion | |
| #2 | Electric switches | |
| #3 | Testing of structures | |
| #4 | Pipes | |
| #5 | Installation of electric cables | |
| #6 | Weighing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roger Luedi | 6 |
| #2 | Luedi Roger | 5 |
| #3 | Luedi R | 2 |
| #4 | Herbert Frehner | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK142255B | Control unit, especially for automatic oil and gas boilers. | |
| DE1927948A1 | Device for digital recording of the deflections of a measuring mechanism | |
| DE1917094A1 | Control and monitoring machine for an oil or gas burner system | |
| GB1179879A | Method of and Apparatus for Testing the Fluid-Tightness of Two Series-Connected Shut-Off Valves in a System |