| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 14 | |
| #2 | Germany | 4 | |
| #3 | France | 4 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Mechanically-driven clocks | |
| #2 | Machines for making clocks | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heinz Rothen | 4 |
| #2 | Thomas Baehni | 4 |
| #3 | Dumont Marcel | 3 |
| #4 | Gabriel Fahndrich | 2 |
| #5 | Hermann Hausheer | 2 |
| #6 | Marcel Dumont | 2 |
| #7 | Gabriel Faehndrich | 2 |
| #8 | Faehndrich Gabriel | 1 |
| #9 | Baehni Thomas | 1 |
| #10 | Robert Ellenberger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3430435A | Collet | |
| GB1102470A | Improvements in or relating to devices for securing a balance spring to a balance staff | |
| FR1475164A | Device for fixing a watch spring to the balance axis and method of manufacturing this device | |
| FR1471748A | Method of manufacturing a unit consisting of a watch spring and a ferrule and device for fixing this unit on the balance | |
| GB1080068A | Improvements in or relating to balance spring collets for watches | |
| US3218794A | Clockwork ferrule | |
| FR1376018A | Watch ferrule |