| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | Switzerland | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machine tools | |
| #3 | Packaging and shipping | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Making needles | |
| #3 | Pipes | |
| #4 | Containers for goods storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rheinische Nadelfabriken | 3 |
| #2 | Classen Josef | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB390430A | Improvements in styli for making sound records | |
| GB351052A | Improvements in or relating to apparatus for sound reproduction from needle-cut records | |
| GB350887A | An improved needle or style for the reproduction of sound from needle-cut records |