Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4391177 | Piano soundboard and method of making same | Stanley A. Grajek, George S. Klaiber | 1983-07-05 |
| 4361458 | Piano soundboard and method of making same | Stanley A. Grajek, George S. Klaiber | 1982-11-30 |
| 4280389 | Piano soundboard | George S. Klaiber, Stanley A. Grajek | 1981-07-28 |
| 4248124 | Piano soundboard | George S. Klaiber, Stanley A. Grajek | 1981-02-03 |