| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | Austria | 5 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Electrical machinery and energy | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Dynamo-electric machines | |
| #3 | Ignition and extinguishing | |
| #4 | Magnets and transformers | |
| #5 | Refrigerators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doelz Heinrich Dipl Ing | 16 |
| Publication | Filing date | Title |
|---|---|---|
| DE3222823A1 | Oil atomising burner | |
| DE3021873A1 | VIBRATION COMPRESSORS | |
| DE2414961A1 | Electrodynamic oscillating plunger compressor for refrigerant - has sound attenuating inlet and outlet chambers in cylinder end wall | |
| AT200595B | Electric vibrating compressor, in particular for small refrigeration machines |