| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 4 | |
| #2 | Canada | 3 | |
| #3 | France | 3 | |
| #4 | United Kingdom | 3 | |
| #5 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Hinges for doors or windows | |
| #2 | Unspecified technologies | |
| #3 | Indexing scheme relating to hinges | |
| #4 | Wing fittings | |
| #5 | Bolts for doors or windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sarenholm Einar | 3 |
| #2 | Fogde Carl Erik | 1 |
| #3 | Saerenholm Einar | 1 |
| #4 | Ernst Andersson | 1 |
| #5 | Erik Fogde Carl | 1 |
| #6 | Einar Sarenholm | 1 |
| #7 | Andersson Ernst | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2548578A | Locking device for windows | |
| US2640221A | Pivot hinge for windows | |
| GB643168A | Improvements in hinges for windows | |
| GB632250A | Improvements in pivot hinges for windows | |
| GB631501A | Improvements in locking devices for windows | |
| CA481714A | Pivot hinge for windows | |
| CA481567A | Locking device for windows | |
| CA494109A | Hinge for windows |