Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11337726 | Apparatus for accessing the pericardial space | Justin Opfermann, Charles BERUL, Axel Krieger, Rohan KUMTHEKAR, Paige MASS +1 more | 2022-05-24 |
| 10925474 | Delivery tool and method for devices in the pericardial space | Charles BERUL, Justin Opfermann, Axel Krieger, Peter Kim, Tanya Davis | 2021-02-23 |
| 10636403 | Electronic sensor device for detecting the vibration related to an amplification system within stringed musical instruments | — | 2020-04-28 |
| 7525030 | Acoustic guitar assembly method and apparatus | — | 2009-04-28 |
| 7271332 | Amplification of acoustic guitars | — | 2007-09-18 |
| 6606994 | Automatic ventilator water trap evacuator | — | 2003-08-19 |
| 5134920 | Transducer device for musical instruments | — | 1992-08-04 |