| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | Austria | 4 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Scaffolding | |
| #3 | Foundations and excavations | |
| #4 | Shaping clay | |
| #5 | Pipes | |
| #6 | General building constructions | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Boessner Josef | 9 |
| #2 | Josef Boessner | 2 |
| #3 | Boessner Josef Jun | 1 |
| #4 | Boessner Josef Sen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2423854A1 | Cable-curve-suspended concrete marine tunnel - with suspended weights loading tube to produce heaviness approaching buoyancy thrust | |
| DE2332687A1 | Underwater pipe or tunnel laying - with sections assembled on bases hung from cables stretched between contractable piers |