Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7970159 | Headphoning | David Kleinschmidt, Roman Sapiejewski | 2011-06-28 |
| 7412070 | Headphoning | David Kleinschmidt, Roman Sapiejewski | 2008-08-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7970159 | Headphoning | David Kleinschmidt, Roman Sapiejewski | 2011-06-28 |
| 7412070 | Headphoning | David Kleinschmidt, Roman Sapiejewski | 2008-08-12 |