| Digest Nr | Subject and Author |
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| 2013.03.27.03 | Ampico Compensating Pneumatic Connection, from Bruce Clark |
| 2013.03.26.02 | Ampico Compensating Pneumatic Connection, from Eliyahu Shahar |
| 2006.05.15.03 | FS: Lindner Welte Lost Motion Compensating Action, from Jon Page |
| 2003.12.27.05 | Ampico Sustain Pedal Compensating Pneumatics, from Eliyahu Shahar |
| 2003.09.05.07 | Ampico B Lost Motion Compensating System, from Bob Taylor |
| 2003.09.04.13 | Ampico B Lost Motion Compensating System, from Ed Copeland |
| 2002.07.17.12 | Ampico Sustain Pedal Compensating Pneumatics, from Craig Brougher |
| 2002.07.16.12 | Ampico Sustain Pedal Compensating Pneumatics, from Paul Manganaro |
| 2002.07.16.11 | Ampico Sustain Pedal Compensating Pneumatics, from Harald Mueller |
| 2002.07.15.10 | Ampico Sustain Pedal Compensating Pneumatics, from Craig Brougher |
| 2002.07.13.04 | Ampico Sustain Pedal Compensating Pneumatics, from Randolph Herr |
| 2002.07.11.09 | Ampico Sustain Pedal Compensating Pneumatics, from Craig Brougher |
| 2002.07.11.08 | Ampico Sustain Pedal Compensating Pneumatics, from D. L. Bullock |
| 2002.07.10.16 | Ampico Sustain Pedal Compensating Pneumatics, from Art Reblitz |
| 2002.07.10.15 | Ampico Sustain Pedal Compensating Pneumatics, from Jeff Davis |
| 2002.07.10.14 | Ampico Sustain Pedal Compensating Pneumatics, from John Johns |
| 2002.07.10.13 | Ampico Sustain Pedal Compensating Pneumatics, from Ken Vinen |
| 2002.07.10.12 | Ampico Sustain Pedal Compensating Pneumatics, from Ferdinand Pointer |
| 2002.07.10.11 | Ampico Sustain Pedal Compensating Pneumatics, from Craig Brougher |
| 2002.07.10.10 | Ampico Sustain Pedal Compensating Pneumatics, from Dean Randall |
| 2002.07.10.09 | Ampico Sustain Pedal Compensating Pneumatics, from Bruce Clark |
| 1996.12.07.05 | Re: Wurlitzer Compensating Perforator, from Matthew Caulfield |
| 1996.12.06.08 | The Wurlitzer Compensating Perforator, from Matthew Caulfield |
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