| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 202 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Engines, pumps and turbines | |
| #3 | Civil engineering | |
| #4 | Thermal processes | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Parachutes | |
| #3 | Internal-combustion piston engines | |
| #4 | Punching metal | |
| #5 | Supplying combustion engines | |
| #6 | General building constructions | |
| #7 | Fluid heaters | |
| #8 | Domestic stoves | |
| #9 | Controlling combustion engines | |
| #10 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wigge Dr Heinrich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE529705C | plane |