Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4391177 | Piano soundboard and method of making same | Stanley A. Grajek, Robert S. Hill | 1983-07-05 |
| 4361458 | Piano soundboard and method of making same | Stanley A. Grajek, Robert S. Hill | 1982-11-30 |
| 4280389 | Piano soundboard | Stanley A. Grajek, Robert S. Hill | 1981-07-28 |
| 4248124 | Piano soundboard | Stanley A. Grajek, Robert S. Hill | 1981-02-03 |
| 4226157 | Waveform synthesis for an electronic musical instrument | Anthony C. Ippolito, William R. Hoskinson | 1980-10-07 |