| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Germany | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Italy | 2 | |
| #6 | Japan | 2 | |
| #7 | Netherlands | 2 | |
| #8 | Sweden | 2 | |
| #9 | Belgium | 1 | |
| #10 | EPO (European Patent Office) | 1 | |
| #11 | Luxembourg | 1 | |
| #12 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Control | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Alarm systems | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bollen Romain F | 2 |
| #2 | Geelen Evrard | 2 |
| #3 | Demaesschalck Etienne | 1 |
| #4 | Bollen Romain Francois Louis | 1 |
| #5 | Bollen Romain L F | 1 |
| #6 | Romein Boren | 1 |
| #7 | Maesschalck Etienne De | 1 |
| #8 | Ponsard J | 1 |
| #9 | Ponsard Jean-Marie | 1 |
| #10 | Bollen R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4329670A | Mercury reed switch | |
| LU81053A1 | Miniature mercury blade switch | |
| US4225836A | Magnetic relay | |
| DE2818466A1 | MERCURY REED RELAY | |
| GB1574947A | Electromagnetic relay |