| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Spain | 3 | |
| #3 | France | 3 | |
| #4 | Germany | 1 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Control | |
| #3 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Measuring electric variables | |
| #2 | Telephonic communication | |
| #3 | Coin-freed | |
| #4 | Money sorting |
| Publication | Filing date | Title |
|---|---|---|
| GB979216A | Coin box telephone with automatic coin storage and coin returning mechanism for varous types of coins | |
| ES216683A1 | A regulatory device for centrifugal brakes (Machine-translation by Google Translate, not legally binding) | |
| GB383343A | Improvements in electricity prepayment meters | |
| GB383344A | Improvements in electricity prepayment meters | |
| DE587193C | Electric double counter | |
| GB350853A | Improvements in and relating to electricity meters |