| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 14 | |
| #2 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Thermal processes | |
| #3 | Measurement | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Foundry moulding | |
| #2 | Solid fuel combustion | |
| #3 | Measuring length, angles and areas | |
| #4 | Casings for combustion chambers | |
| #5 | Explosive charges | |
| #6 | Grates | |
| #7 | Fluid heaters |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kraemer Fritz | 5 |
| #2 | Feuring Karl | 3 |
| #3 | Grebe Ludwig | 3 |
| #4 | Fritz Kraemer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2627231A | Body for rockets and rocketlike vehicles |