| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Germany | 6 | |
| #3 | France | 6 | |
| #4 | Canada | 4 | |
| #5 | United Kingdom | 4 | |
| #6 | Italy | 4 | |
| #7 | Spain | 3 | |
| #8 | Japan | 3 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Measurement |
| # | Name | Total Patents |
|---|---|---|
| #1 | Solomon Donald F | 6 |
| #2 | Sopinski Zygmunt J | 4 |
| #3 | Trimble Lester B | 4 |
| #4 | Otto William M | 3 |
| #5 | Solomon Donald Frank | 3 |
| #6 | Trimble L | 2 |
| #7 | Sopinski Z | 2 |
| #8 | Donarudo Furanku Soromon | 2 |
| #9 | Knoll William A | 2 |
| #10 | Rivera P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2439067A1 | DYNAMOMETRIC KEY | |
| GB2031315A | Torque limit indicating wrench | |
| US4257507A | Torque wrench with pawl guide | |
| US4126062A | Torque wrench | |
| US4053037A | Reversing ratchet | |
| US4063626A | Silent ratchet | |
| US3970155A | Electronic torque wrench | |
| US3893354A | Torque limit wrench | |
| US3866492A | Torque multiplier | |
| US3895517A | Electronic torque wrench | |
| US3783703A | Ratchet mechanism | |
| US3788132A | Torque wrench | |
| US2743638A | Torque-limiting wrench |