| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | Canada | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Argentina | 1 | |
| #6 | Brazil | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | New Zealand | 1 | |
| #9 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | IT methods for management | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Coin-freed | |
| #2 | Data processing systems | |
| #3 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marrinson Andrew H | 5 |
| #2 | Gilmore Kevin J | 5 |
| #3 | Sloan Joseph W | 5 |
| #4 | Jahnke William A | 5 |
| #5 | Snyder Harry P | 3 |
| #6 | Foster Joseph W | 3 |
| #7 | Berg Timothy G | 2 |
| #8 | Day Mark E | 2 |
| #9 | Bush A Michael | 2 |
| #10 | Miller Mark P | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US5045969A | Keyed disconnect of electric service at an electric meter location | |
| US5146067A | Prepayment metering system using encoded purchase cards from multiple locations | |
| US4795892A | Pre-paid commodity system | |
| AU1220588A | Prepayment metering system using encoded purchase cards |