| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 2 | |
| #4 | Germany | 2 | |
| #5 | France | 2 | |
| #6 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Spraying devices | |
| #2 | Animal catching | |
| #3 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sigvardt Knud | 4 |
| #2 | Knud Sigvardt | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2780490A | Device for subdividing an airstream | |
| US2723160A | Spraying machines | |
| GB728260A | Improvements in and relating to spraying devices | |
| GB728276A | Improvements in and relating to spraying apparatus | |
| GB728275A | Improvements in and relating to spraying devices | |
| CA538500A | Spraying machine | |
| CA551208A | Blower nozzles |