| Digest Nr | Subject and Author |
 |
| 2004.04.30.09 | Vacuum Transducer for Motor Speed Control, from Roger Waring |
| 2004.04.29.07 | Vacuum Transducer for Motor Speed Control, from Nicholas Simons |
| 2004.04.29.06 | Vacuum Transducer for Motor Speed Control, from Pete Knobloch |
| 2004.04.29.05 | Vacuum Transducer for Motor Speed Control, from Craig Smith |
| 2004.04.28.07 | Vacuum Transducer for Motor Speed Control, from John A. Tuttle |
| 2004.04.28.06 | Vacuum Transducer for Motor Speed Control, from Spencer Chase |
| 2004.04.28.05 | Vacuum Transducer for Motor Speed Control, from Mark Kinsler |
| 2004.04.27.02 | Seek Vacuum Transducer for Motor Speed Control, from Roger Waring |
| 1999.02.01.21 | Strain Gage Transducer for Pneumatic Roll Reader, from Richard Vance |
| 1999.01.31.17 | Strain Gage Transducer for Pneumatic Roll Reader, from Richard Vance |
 |