| 156-0464-00 | 80009 | TEKTRONIX, INC. |
| 1820-1204 | 28480 | HEWLETT-PACKARD COMPANY |
| 28466-214 | U2632 | MARCONI INSTRUMENTS LTD SERVICE DIVI ION |
| 28466-214Y | U2632 | MARCONI INSTRUMENTS LTD SERVICE DIVI ION |
| 3300-123 | U3755 | MARCONI AVIONICS LTD |
| 351-1523-130 | 95105 | ROCKWELL COLLINS, INC. |
| 445/4/01410/026 | U4290 | G E C MARCONI S3I LTD COMBAT SYSTEMS IVISION |
| 5242-21 | 05869 | RAYTHEON COMPANY |
| 587-765 | 92739 | AMPEX SYSTEMS CORP |
| 74LS20N | 04713 | FREESCALE SEMICONDUCTOR, INC. |
| 74LS20N | 49956 | RAYTHEON COMPANY |
| 74LS20PC | 07263 | FAIRCHILD SEMICONDUCTOR CORP |
| 74LS20PC | K0577 | BRITISH SAROZAL LTD |
| BL2662055 | D0894 | ROHDE & SCHWARZ GMBH & CO. KOMMANDITGESELLSCHAFT |
| DM74LS20N | 27014 | NATIONAL SEMICONDUCTOR CORPORATION |
| N74LS20N | 18324 | PHILIPS SEMICONDUCTORS INC |
| SB74LS20N | 18324 | PHILIPS SEMICONDUCTORS INC |
| SN74LS20N | 01295 | TEXAS INSTRUMENTS INCORPORATED |
| SN74LS20NA | C7191 | ADELCO ELEKTRONIK GMBH |