| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 5 | |
| #2 | Germany | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | Canada | 3 | |
| #5 | Finland | 3 | |
| #6 | France | 3 | |
| #7 | Norway | 3 | |
| #8 | Denmark | 2 | |
| #9 | Japan | 2 | |
| #10 | Netherlands | 2 | |
| #11 | United States | 2 | |
| #12 | Australia | 1 | |
| #13 | Brazil | 1 | |
| #14 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Furniture and games | |
| #4 | Packaging and shipping | |
| #5 | Chemical engineering | |
| #6 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Loevgren Anders | 8 |
| #2 | Holmqvist Lars | 4 |
| #3 | Lovgren A | 3 |
| #4 | Lovgren Anders | 2 |
| #5 | Lovgren B A | 2 |
| #6 | Ulfhielm Torbjoern | 2 |
| #7 | Ulfhielm S T | 1 |
| #8 | Loevgren A | 1 |
| #9 | Rarusu Horumukubiisuto | 1 |
| #10 | Holmqvist L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL7906524A | Door construction. | |
| GB1593806A | Timber drying apparatus | |
| GB1597396A | Closure for an opening in a vertical surface | |
| CA1113853A | Door, preferably for industrial buildings | |
| DE2814345A1 | Lifting industrial door fall prevention mechanism - has guards linked to cables locking door to guide rail on load reduction (SW 12.6.78) | |
| GB1491105A | Method of manufacturing doors and arrangement therefor |