| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 19 | |
| #2 | United States | 3 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Transport | |
| #5 | Measurement | |
| #6 | Thermal processes | |
| #7 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Nails | |
| #3 | Vehicle tyre repairing | |
| #4 | Electromechanical clocks | |
| #5 | Unspecified technologies | |
| #6 | Unspecified technologies | |
| #7 | Domestic stoves for solid fuels | |
| #8 | Wing fittings | |
| #9 | Bolts for doors or windows | |
| #10 | Footwear laces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ernst Frischmuth | 3 |
| #2 | Frischmuth Ernst | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US1740852A | Nut-locking washer | |
| US1642725A | Key for combination locks | |
| US1718130A | Combination lock |