| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 4 | |
| #2 | Belgium | 2 | |
| #3 | Germany | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Spain | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Amelink Joost | 3 |
| #2 | Joost Amelink | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8400284A | Ball joint used between hinging pipes - has holding ring locked by plate inserted between lug and ear of joint components | |
| NL8006075A | Quick coupling. | |
| NL7908667A | Rapid coupling ball joint for dredger pipes - has socket on one pipe end entering ball cup movable on ball fixed to other pipe end | |
| DE2918589A1 | QUICK COUPLING BALL JOINT | |
| NL7903496A | Quick coupling pipe ball joint - has hinging part fitting round ball and automatically locking into sleeve |