| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport | |
| #3 | Engines, pumps and turbines |
| Publication | Filing date | Title |
|---|---|---|
| DE419856C | Process for the production of headlights with headlight carriers | |
| DE419631C | Circuit breaker for electrical ignition devices | |
| DE419835C | Circuit breaker for electrical ignition devices | |
| DE422449C | Electric lighting system, especially for motor vehicles and. like | |
| DE411362C | Headlights with bayonet lock | |
| DE418414C | Electric starter for internal combustion engines | |
| DE414248C | Switch for the lighting system of motor vehicles | |
| DE416205C | Reversible brush bridge that draws the current from dynamo machines | |
| DE415885C | Control box for the electrical system on motor vehicles | |
| DE428386C | Device for maintaining the same polarity when changing the direction of rotation of electrical machines by reversing the polarity of the field winding | |
| DE418482C | Device for breaking the circuit for the electric horn of motor vehicles | |
| DE416886C | Device for starting internal combustion engines on vehicles in which the alternator is used as an ignition current source |