| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Hinges for doors or windows | |
| #3 | Bolts for doors or windows | |
| #4 | Roof coverings | |
| #5 | General building constructions | |
| #6 | Structural elements | |
| #7 | Wing fittings | |
| #8 | Domestic heating systems | |
| #9 | Swimming pools | |
| #10 | Wood working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Persson Eric Sigfrid | 75 |
| #2 | Eric Sigfrid Persson | 43 |
| Publication | Filing date | Title |
|---|---|---|
| ES197762A1 | A perfection in the frames of windows | |
| ES197672A1 | A shutter head for metallic windows | |
| CA396153A | Window locking and tightening device | |
| CA530699A | Sash frame with two or more window panes | |
| CA423882A | Window | |
| CA396154A | Window corner fitting | |
| CA380291A | Window | |
| CA388627A | Window | |
| CA386127A | Window locking device | |
| CA398384A | Pivoted window regulator | |
| CA412200A | Window | |
| CA396738A | Shading device manufacturing apparatus | |
| CA380290A | Window with coupled sashes |