| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | France | 4 | |
| #3 | Switzerland | 2 | |
| #4 | Denmark | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Sweden | 2 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement | |
| #4 | Telecommunications | |
| #5 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spaelti A | 4 |
| #2 | Spalti Alfred | 4 |
| #3 | Nyfeler Alex | 3 |
| #4 | Nyfeler A | 2 |
| #5 | Alex Nyfeler | 2 |
| #6 | Vonarburg H | 1 |
| #7 | Franz Raetzer | 1 |
| #8 | Kretz Carl | 1 |
| #9 | Szuran Fritz | 1 |
| #10 | Rutenberg A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1272507A | Apparatus for coding the value of an integrated measurement | |
| US3385472A | Energy consumption metering and invoicing means |