| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 10 | |
| #2 | Germany | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Measurement | |
| #3 | Chemical engineering | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Spark gaps and corona devices | |
| #2 | Supplying combustion engines | |
| #3 | Separation | |
| #4 | Mechanically-driven clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pognon Maurice | 10 |
| #2 | Maurice Pognon | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US1607747A | Spark plug employed chiefly for supercompression engines | |
| GB216417A | Improvements in spark plugs | |
| GB173528A | Improvements in automatic fuel regulators | |
| GB191508367A | Improvements in Sparking Plugs. | |
| GB191506593A | Improvements in Sparking Plugs. |