| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Brazil | 1 | |
| #3 | Canada | 1 | |
| #4 | Denmark | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Netherlands | 1 | |
| #9 | Norway | 1 | |
| #10 | Sweden | 1 | |
| #11 | United States | 1 | |
| #12 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Special information storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leone Alfredo | 9 |
| #2 | Snyder Joel | 9 |
| #3 | Snyder J | 1 |
| #4 | Leone A | 1 |
| #5 | Snyder Joel B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK544784A | Places for recording, storing and reading the number of video cassette playback | |
| US4593337A | Video cassette play counting, storing and reading system |