| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Electrical machinery and energy | |
| #3 | Foods and drinks | |
| #4 | Environmental technology | |
| #5 | Packaging and shipping | |
| #6 | Furniture and games |
| Publication | Filing date | Title |
|---|---|---|
| DE747453C | Preservation of feed of plant and animal origin | |
| GB281057A | Improvements in electromagnetic musical instruments | |
| DE439571C | Device for generating acoustically uniform permanent tones on strings or the like using electromagnetically operated hammers | |
| GB213255A | A device for mechanically determining the harmonic relations of musical notes | |
| DE468855C | Electric damping device for pianos |