| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 3 | |
| #3 | United States | 3 | |
| #4 | Austria | 2 | |
| #5 | Brazil | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Italy | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Engines, pumps and turbines | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frank Gunter | 3 |
| #2 | Callies Dieter | 2 |
| #3 | Hagen Siegbert Graf Vom | 2 |
| #4 | Graf Vom Hagen Siegbert | 2 |
| #5 | Frank G | 1 |
| #6 | Hagen Siegbert | 1 |
| #7 | Grap Vom Hagen S | 1 |
| #8 | Callies D | 1 |
| #9 | Frank Gunther | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4110667A | Process for cleaning spark plugs on internal combustion engines | |
| DE2529724A1 | IGNITION DEVICE FOR COMBUSTION MACHINES (II) | |
| DE2340865A1 | IGNITION DEVICE FOR COMBUSTION MACHINERY |