| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | United Kingdom | 5 | |
| #3 | Germany | 2 | |
| #4 | United States | 2 | |
| #5 | Belgium | 1 | |
| #6 | Spain | 1 | |
| #7 | Italy | 1 | |
| #8 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines | |
| #3 | Computer technology | |
| #4 | Surface technology and coating | |
| #5 | Measurement |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peronnet Roland | 3 |
| #2 | Kutourieru Berunaaru | 1 |
| #3 | Saint-Hilaire Albert-Barbier | 1 |
| #4 | Saint-Hilaire Albert Barbier | 1 |
| #5 | Perone Rooran | 1 |
| #6 | Fombert Christian | 1 |
| #7 | Couturier Bernard | 1 |
| #8 | Fuonberuto Kurisuchiyan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4303949A | Magnetic recording device for providing security related information | |
| US4273603A | Process for transfer of a magnetic layer from a temporary to a permanent support | |
| GB1599458A | Cleaning tapes for magnetic recording heads | |
| GB758541A | A device for indicating variations in the thickness of magnetic coatings | |
| GB645053A | Improvements in the manufacture of phonograph records |