| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Canada | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Australia | 1 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Electrophonic musical instruments | |
| #2 | Loudspeakers and microphones | |
| #3 | Special musical instruments |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ierymenko Paul F | 11 |
| #2 | Berdahl Edgar Joseph | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2010263521A1 | Stringed instrument with active string termination motion control | |
| US2006243123A1 | Player technique control system for a stringed instrument and method of playing the instrument | |
| EP1218716A1 | Unitary transducer control system | |
| CA1017845A | Multi-channel pick-up with built-in preamplifiers |