| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Furniture and games | |
| #3 | Measurement | |
| #4 | Organic fine chemistry | |
| #5 | Materials and metallurgy | |
| #6 | Environmental technology | |
| #7 | Textiles and paper | |
| #8 | Consumer goods | |
| #9 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Springs | |
| #2 | Measuring length, angles and areas | |
| #3 | Special acyclic compounds | |
| #4 | Toys | |
| #5 | Metal tempering | |
| #6 | Finishing work on buildings | |
| #7 | Gas-flow silencers for machines | |
| #8 | Knitting | |
| #9 | Skates | |
| #10 | Harnesses |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fischer Alfred | 4 |
| Publication | Filing date | Title |
|---|---|---|
| DE619088C | Clamping device for pressing boards together on their supporting beams |