| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Earth drilling | |
| #3 | Dredging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hochstrasser Robert | 7 |
| #2 | Robert Hochstrasser | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3542140A | Rotary appliance for facilitating the driving or withdrawal of piles,pit-props and the like | |
| US3084518A | Tubular pile with driving cap | |
| GB902687A | Method of and means for driving in piles or sheet piling | |
| GB862051A | A method of and apparatus for consolidating soil strata | |
| GB838911A | Improvements in or relating to bore-hole grabs |