| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Ireland | 2 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | Denmark | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Spain | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Greece | 1 | |
| #9 | India | 1 | |
| #10 | United States | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Special information storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hackett Joseph | 9 |
| Publication | Filing date | Title |
|---|---|---|
| GB2120204A | Magnetic tape cassette with brake mechanism | |
| IE821086L | Magnetic tape cassette |