| Digest Nr | Subject and Author |
|---|
 |
| 2001.04.11.09 | 1924 Pleyel Synchronizing Patent at Web Site, from Douglas Henderson |
| 2000.04.11.08 | Pleyel Synchronizing Patent Illustrations, from Douglas Henderson |
| 2000.04.09.04 | Pleyel Patent for Synchronizing Music Roll, from Douglas Henderson |
| 2000.04.09.03 | Synchronizing Seeburg KT Special Tune Indicator, from Bill Masterman |
| 1999.04.26.06 | Roll Scanner Motors and Synchronizing, from Horst Mohr |
| 1999.03.16.13 | Synchronizing Music Rolls and Measure Bars, from Don Teach |
| 1998.11.05.15 | Synchronizing Duo-Art With Orchestra, from Dan Wilson, London |
| 1998.11.04.13 | Synchronizing Player Piano with Phono Record, from Darrell Clarke |
|
