| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 13 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Sweden | 2 | |
| #5 | Australia | 1 | |
| #6 | Canada | 1 | |
| #7 | Denmark | 1 | |
| #8 | France | 1 | |
| #9 | Italy | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Mechanical elements | |
| #5 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Air-conditioning | |
| #2 | Non-positive-displacement pumps | |
| #3 | Unspecified technologies | |
| #4 | Gearing | |
| #5 | Harvesting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nitteberg Per | 4 |
| #2 | Kristiansen P | 3 |
| #3 | Kristiansen Per | 2 |
| #4 | Tveten K | 2 |
| #5 | Nitteberg Per Alfred | 2 |
| #6 | Nitteberg P | 2 |
| #7 | Larsen John Hj | 2 |
| #8 | Loe O | 1 |
| #9 | Larsen J H | 1 |
| #10 | Tveten Knut Ivar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3514901A1 | Drive device for power lawnmower with inside driving of the wheels | |
| US4196771A | Ventilator with heat exchanger | |
| DE2635109A1 | Motorised lawn mower drive - has gears pressed against wheel tyres and each formed with projecting hub carrying freely rotatable cleaning ring | |
| GB1511811A | V-belt variator especially for motorized mattocks or cultivators |