| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Earth drilling | |
| #3 | Accessories for machine tools |
| Publication | Filing date | Title |
|---|---|---|
| DE681512C | Returning epicyclic gears to drive the guide rollers of tools, especially cutting or welding torches | |
| DE559718C | Device to enable the actuation of the upper closing organ of pipes in earth boreholes | |
| DE574736C | Device for shutting off and regulating gases, vapors or liquids | |
| DE510653C | Cutting or welding machine | |
| DE489789C | Adjustment device for cutting or welding torch |