| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Switzerland | 2 | |
| #3 | France | 2 | |
| #4 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Cranes | |
| #2 | Electric motor controls |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lehner Guenter | 6 |
| #2 | Burgdorf Frank Dipl Ing | 2 |
| #3 | Burgdorf Frank | 2 |
| #4 | Lehner Gunter | 1 |
| #5 | Bertsche Helmut | 1 |
| #6 | Ledergerber Hans-Juergen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3403419A1 | Tower crane | |
| DE3307893A1 | Rotating tower crane with jib and counter-jib | |
| DE3307892A1 | Tower slewing crane with jib and counter-jib | |
| DE3009445A1 | Speed control for asynchronous motor in crane - has two of three phases each controlled by series triac. or thyristors in antiparallel | |
| DE3005984A1 | Folding rotary tower crane - has telescopic tower and folding jib and cable system with sections for load lifting and erection | |
| DE2832272A1 | TOWER TURNING CRANE |