Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5503042 | Antifriction force transmission means for plungers of torque signalling wrenches | John A. Larson, John K. Larson | 1996-04-02 |
| 5244284 | Antifriction roller means for plungers | John K. Larson | 1993-09-14 |
| 5129293 | Torque control mechanism for wrenches and the like | John K. Larson | 1992-07-14 |
| 4901610 | Adjustable torque controlling mechanism | John K. Larson | 1990-02-20 |
| 4376386 | Torque wrench testing devices and the like | — | 1983-03-15 |
| 4290329 | Torque release wrench of the preset type | — | 1981-09-22 |