Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5055939 | Method system & apparatus for synchronizing an auxiliary sound source containing multiple language channels with motion picture film video tape or other picture source containing a sound track | Daniel W. Gravereaux | 1991-10-08 |
| 4839733 | Method and system for synchronization of an auxiliary sound source to motion picture film, video tape, or other picture source containing a sound track | Daniel W. Gravereaux | 1989-06-13 |