| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Basic materials chemistry | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Rolling metal | |
| #2 | Pipes | |
| #3 | Explosive charges | |
| #4 | Pistons and sealings | |
| #5 | Coating compositions |
| Publication | Filing date | Title |
|---|---|---|
| DE233725C | Rolling mill with planetary motion de work rolls | |
| DE239642C | Rolling mill with planetary movement of the work rolls | |
| DE230223C | Rolling mill with planetary movement of the work rolls | |
| DE174882C | Spike device for pilger mills with a fixed roller frame | |
| DE152575C | Feed device for pilger mills |