Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7438029 | Piston waveform shaping | John Fox, Robert A. Sanderson | 2008-10-21 |
| 7334548 | Piston joint | Robert A. Sanderson | 2008-02-26 |
| 7331271 | Variable stroke/clearance mechanism | John Dieckmann | 2008-02-19 |
| 7162948 | Variable stroke assembly balancing | Robert A. Sanderson | 2007-01-16 |
| 7040263 | Piston engine assembly | Robert A. Sanderson, Kay Herbert | 2006-05-09 |
| 7011469 | Piston joint | Robert A. Sanderson | 2006-03-14 |
| 6925973 | Piston engine assembly | Robert A. Sanderson, Kay Herbert | 2005-08-09 |
| 6915765 | Piston engine assembly | Robert A. Sanderson | 2005-07-12 |
| 6854377 | Variable stroke balancing | Robert A. Sanderson | 2005-02-15 |
| 6829978 | Piston engine balancing | Robert A. Sanderson, Kay Herbert | 2004-12-14 |
| 6460450 | Piston engine balancing | Robert A. Sanderson, Kay Herbert | 2002-10-08 |
| 6446587 | Piston engine assembly | Robert A. Sanderson, Kay Herbert | 2002-09-10 |
| 6397794 | Piston engine assembly | Robert A. Sanderson, Kay Herbert | 2002-06-04 |
| 5984226 | Method for making wound strings for musical instruments characterized by reduced inharmonicity | — | 1999-11-16 |
| 5892166 | Wound strings for musical instrument | — | 1999-04-06 |
| 5817960 | Wound strings for musical instruments characterized by reduced inharmonicity and method for making the same | — | 1998-10-06 |
| 5285711 | Method and apparatus for tuning musical instruments | — | 1994-02-15 |