| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy | |
| #3 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Electric switches | |
| #3 | Circuits for supplying electric power | |
| #4 | Making metal sheets | |
| #5 | Making metal chains | |
| #6 | Rolling metal | |
| #7 | Metal tempering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kleine-Weischede Heinrich | 15 |
| #2 | Hawel Dipl-Ing Gustav | 3 |
| #3 | Michaelis Dipl-Ing Frobert | 3 |
| #4 | Naaf Heinrich Wilhelm | 1 |
| #5 | Berger Gerhard | 1 |
| #6 | Rittmann Dipl-Ing Rudolf | 1 |
| #7 | Rittmann Dipl-Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE925782C | Automatic charger for monitoring the charging of electric batteries |