| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Unspecified technologies | |
| #3 | Electrically-conductive connections |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heinrich Biemer | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2282698A | Lock | |
| GB525094A | Improvements in or relating to locks | |
| US1979186A | Lock | |
| GB391043A | Improvements in and relating to locks | |
| GB179912A | Improvements in and relating to padlocks | |
| US1621347A | Padlock |