| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 | |
| #2 | Germany | 7 | |
| #3 | France | 5 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Basic materials chemistry |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emil Bommer | 16 |
| #2 | Bommer Emil | 5 |
| #3 | Gustav Bommer | 3 |
| #4 | Sandstrom William K | 1 |
| #5 | Rogers Clarence T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2004187A | Adjustable door support and coupling | |
| US1924537A | Spring hinge and adjustable leaf | |
| US1978736A | Cam and slide mechanism | |
| US1871030A | Doorcheck and closer | |
| US1883506A | Spring hinge | |
| US1871031A | Hinge construction | |
| US1904120A | Door hinge | |
| US1859763A | Door check and closer | |
| US1857133A | Door check and closer | |
| US1845477A | Door hinge | |
| US1816169A | Door closer and check | |
| US1691697A | Spring hinge | |
| US1624919A | Pivot spring hinge | |
| US1561209A | Door closer | |
| US1543415A | Spring-hinge member | |
| US1653448A | Pivot hinge | |
| GB216232A | Improvements in spring hinges | |
| US1447641A | Hinge | |
| US1332881A | Spring-pivot | |
| US1332456A | Web and barrel construction for spring-hinges |