| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | Sweden | 5 | |
| #3 | Germany | 4 | |
| #4 | United Kingdom | 4 | |
| #5 | Netherlands | 4 | |
| #6 | United States | 4 | |
| #7 | Canada | 3 | |
| #8 | Finland | 3 | |
| #9 | Italy | 3 | |
| #10 | Japan | 3 | |
| #11 | Norway | 3 | |
| #12 | Denmark | 2 | |
| #13 | EPO (European Patent Office) | 2 | |
| #14 | Austria | 1 | |
| #15 | Australia | 1 | |
| #16 | Switzerland | 1 | |
| #17 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Civil engineering | |
| #5 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Domestic stoves | |
| #2 | Non-positive-displacement pumps | |
| #3 | Unspecified technologies | |
| #4 | Air-conditioning | |
| #5 | Unspecified technologies | |
| #6 | Fire-fighting | |
| #7 | Cleaning | |
| #8 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bergmark Nils Randolf | 18 |
| #2 | Westermark Thord Ingvar Eugen | 11 |
| #3 | Bergmark N R | 5 |
| #4 | Westermark T I E | 4 |
| #5 | Bergmark N | 3 |
| #6 | Johansson Karl-Gunnar Torbjoer | 3 |
| #7 | Toruto Ingufuaaru Oigen Buesut | 3 |
| #8 | Nirusu Randorufu Baagumaruku | 3 |
| #9 | Westermark Thord Ingvar Eugene | 3 |
| #10 | Hedman Per-Martin | 2 |
| Publication | Filing date | Title |
|---|---|---|
| EP0304533A1 | Filter unit for range ventilators of so-called labyrinth filter type | |
| EP0238780A1 | A filter assembly intended for extractor fans in domestic ovens | |
| SE8300650D0 | Armature housing and two lamps. | |
| SE8206526D0 | Adjustment of forced ventilation in a blow directed air-extraction system. | |
| US4089328A | Kitchen ventilator | |
| GB1569146A | Kitchen ventilator having a downwardly directed air curtain | |
| GB1569148A | Kitchen ventilator having a valve for adjustment between evacuation and recirculation | |
| GB1569147A | Kitchen ventilator | |
| GB1465119A | Fire damper device | |
| FR1543532A | Kitchen fan |