| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | China | 1 | |
| #4 | United States | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Stringed musical instruments | |
| #2 | Electrophonic musical instruments | |
| #3 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Seiler Steffen | 5 |
| #2 | Velo Henri Jan | 2 |
| #3 | Donnert Horst | 1 |
| #4 | Schamel Helmut | 1 |
| #5 | Velo Henri Yang | 1 |
| #6 | Schaefer Kurt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19802510A1 | Piano casing useful for adjustment of loudness of music | |
| EP0855695A2 | Fallboard for keyboardinstrument | |
| DE19747491A1 | Soundboard and process for its production | |
| DE19716177A1 | Electrophonic keyboard instrument | |
| DE19537261A1 | Manufacturing process for stringed keyboard instruments | |
| DE4406296A1 | Mechanics for a piano | |
| DE3707591C1 | Grand piano or piano |