Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4564757 | Mirror position sensor for improved track selection in optical data disk system | Edward V. LaBudde, Der-Chang Hsieh, Roger C. Parker, Robert J. Johnson | 1986-01-14 |
| 4560925 | Mirror position sensor and associated pivot suspension for improved track selection in optical data disk system | Der-Chang Hsieh | 1985-12-24 |
| 4544241 | Mirror position sensor and associated motor for improved track selection in optical data disk system | Edward V. LaBudde | 1985-10-01 |