| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 2 | |
| #2 | Germany | 2 | |
| #3 | Sweden | 2 | |
| #4 | United States | 2 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Denmark | 1 | |
| #8 | Spain | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Mechanical elements | |
| #3 | Civil engineering | |
| #4 | Electrical machinery and energy | |
| #5 | Basic communication technologies | |
| #6 | Measurement | |
| #7 | Environmental technology | |
| #8 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Boekelman W | 2 |
| #2 | Boekelman Willem Antonius Jr | 2 |
| #3 | Boekelman Willem Antonius Sr | 2 |
| #4 | Boekelman Willem A Jr | 1 |
| #5 | Groen Johannes | 1 |
| #6 | Groen J | 1 |
| #7 | Boekelman Willem A Sr | 1 |
| #8 | Boekelman Willem Antonius | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL168597B | Valve for sanitary purposes and valve housing intended for this. | |
| US3556146A | Liquid dispensing device automatically operated by proximity of a hand thereto | |
| US3540650A | Thermostatic regulating device with a synthetic thermoplastic expansion element | |
| GB1216773A | Expansion element for operating a thermostatic regulating member and combination tap | |
| CA879539A | Expansion element for operating a thermostatic regulating member, and combination tap provided with such an expansion element |