| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Textiles and paper | |
| #4 | Measurement | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Clutches and brakes | |
| #3 | Sewing | |
| #4 | Vehicle drive control systems | |
| #5 | Parachutes | |
| #6 | Vehicle transmission mounting | |
| #7 | Measuring length, angles and areas | |
| #8 | Mechanical control devices | |
| #9 | Testing of structures | |
| #10 | Making gears or toothed racks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Soden-Fraunhofen Alfred Von | 4 |
| #2 | Wettstein Willi | 3 |
| #3 | Zahnradfabrik G M B H | 1 |
| #4 | H Zahnradfabrik G M B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA208279A | Change speed gear for motor cars |