| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Germany | 3 | |
| #3 | United States | 3 | |
| #4 | France | 2 | |
| #5 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Mechanical elements | |
| #5 | Transport | |
| #6 | Furniture and games | |
| #7 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eduard Wille | 2 |
| #2 | Otto Muth | 1 |
| #3 | Muth Otto | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2951389A | Control for motor driven nut tightener | |
| GB794045A | Motor-driven screwing-in tool for screwing-in and tightening screws or nuts | |
| US2679777A | Predetermined torque release wrench | |
| GB701604A | A torque limiting spanner | |
| GB237776A | Improvements in screw thread cutting tools, such as taps, dies, screw-thread die-plates, screw-thread cutting heads, or the like | |
| CA501464A | Torque-measuring-spanner |