| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Wood working | |
| #3 | Wood processing machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Swanson Earl C | 4 |
| #2 | Johnson Arthur B | 3 |
| #3 | Andersen Fred C | 3 |
| #4 | Bird Clarence P | 1 |
| #5 | Erickson John E | 1 |
| #6 | Rowland John B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2144782A | Window structure | |
| US2003982A | Window construction | |
| US1877977A | Window frame | |
| US1789345A | Window and door frame | |
| US1767569A | Window and door frame | |
| US1823200A | Woodworking machine | |
| CA309371A | Window and door frame | |
| CA303380A | Dado forming machine | |
| CA303381A | Device for tenoning machines | |
| CA359782A | Window construction | |
| CA327417A | Woodworking machine |