| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 12 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations |
| Publication | Filing date | Title |
|---|---|---|
| NL7600786A | Building foundation reinforcing system - inserts bar in drilled hole and fills intervening space with hardening glue | |
| NL7314315A | Light weight concrete foundation pile construction - pile is formed in the soil, using a lost shuttering arrangement | |
| NL7312148A | Vibrator to sink concrete pile foundations - has support plate on pile and end connected to foundation both taking connection bars |