| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 6 | |
| #2 | Switzerland | 6 | |
| #3 | United Kingdom | 5 | |
| #4 | United States | 5 | |
| #5 | Denmark | 4 | |
| #6 | Spain | 2 | |
| #7 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mueller Carl August | 20 |
| #2 | Carl August Mueller | 6 |
| Publication | Filing date | Title |
|---|---|---|
| US1114709A | Cylinder-lock. | |
| GB191217780A | Improvements in or relating to Safety Locks. | |
| NL411C | Improvement to a security lock | |
| US1173677A | Lock. | |
| GB191201296A | Improvements in or relating to Locks. | |
| GB191114349A | Improvements in or relating to Lock Tumblers. | |
| US1031953A | Safety-lock. | |
| US1092223A | Safety-lock. | |
| GB190822005A | Improvements in or relating to Locks. | |
| US973455A | Safety-lock. | |
| GB190712450A | An Improved Safety Lock. |