| D841728 |
Circular piano |
Brockett Parsons, Charles E. Johnson |
2019-02-26 |
| 8159683 |
Reflective piano keyboard scanner |
— |
2012-04-17 |
| 8013234 |
Reflective piano keyboard scanner |
— |
2011-09-06 |
| 7843575 |
Reflective piano keyboard scanner |
— |
2010-11-30 |
| 6178245 |
Audio signal generator to emulate three-dimensional audio signals |
Anthony Martin Sarain |
2001-01-23 |
| 5231283 |
Opto-electronic sensing method and device for an acoustic piano |
Anthony G. Williams |
1993-07-27 |
| 5196639 |
Method and apparatus for producing an electronic representation of a musical sound using coerced harmonics |
J. Robert Lee |
1993-03-23 |
| 5001339 |
Opto-electronic sensing method and device for an acoustic piano |
Anthony G. Williams |
1991-03-19 |
| 4969385 |
Reassignment of digital oscillators according to amplitude |
Anthony G. Williams |
1990-11-13 |
| 4953437 |
Method and apparatus for digitally generating musical notes |
— |
1990-09-04 |
| 4941387 |
Method and apparatus for intelligent chord accompaniment |
Anthony G. Williams |
1990-07-17 |
| 4602545 |
Digital signal generator for musical notes |
— |
1986-07-29 |
| 4475427 |
Frequency independent ramp generator |
— |
1984-10-09 |
| 4375176 |
Keyboard latch for electronic organ |
— |
1983-03-01 |
| 4322996 |
Alternating repeat keying signal generator |
William Wangard, III |
1982-04-06 |
| 4208939 |
Data encoder for an electronic musical instrument |
William Wangard, III |
1980-06-24 |