| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 5 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Germany | 1 | |
| #4 | Denmark | 1 | |
| #5 | Norway | 1 | |
| #6 | United States | 1 | |
| #7 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Nails | |
| #3 | Unspecified technologies | |
| #4 | Ladders | |
| #5 | Springs | |
| #6 | Elevators and escalators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Klijnstra Tjipke Gerard | 4 |
| #2 | Van Leeuwen Martin | 1 |
| #3 | Van Leeuwen Johannes | 1 |
| #4 | Van Melle Leonard | 1 |
| #5 | Melle Leendert Van | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8900543A | Support cable shock absorbing unit - has bolt with rigid support plate and eye for brake unit cable | |
| NL8702789A | Coupling device. | |
| NL8402996A | Coupling system for removable installation of a scaffolding rail. | |
| NL8402618A | Storage attachment for a stairway. | |
| NL7703990A | Locking device for locking two matching cylindrical parts compatible. |