| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | Austria | 8 | |
| #3 | France | 2 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Basic communication technologies | |
| #3 | Control | |
| #4 | Packaging and shipping |
| # | Name | Total Patents |
|---|---|---|
| #1 | Giesenhagen Gerhard | 4 |
| #2 | Schilling Dr Walter | 2 |
| #3 | Krabbe Ulrik Hindenburg | 2 |
| #4 | Sorensen Harald Mann | 2 |
| #5 | Giesenhagen G H | 1 |
| #6 | Huethe E | 1 |
| #7 | Phoehs Erwin Dipl Ing | 1 |
| #8 | Giesenhagen Gerhard H | 1 |
| #9 | Sierwald K | 1 |
| #10 | Pfohs Dipl-Ing Erwin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1156879B | Arrangement for countercurrent braking of a direct current motor fed from a variable voltage source | |
| DE1092543B | Arrangement for keeping a DC load constant | |
| DE1023488B | Single-phase transducer | |
| DE1040658B | Battery charger | |
| DE1000911B | Arrangement for influencing the control characteristic of a direct current pre-magnetized choke coil | |
| DE885429C | High frequency contact |