| 73463862 | ENVOY | TANDEM COMPUTERS INCORPORATED | 1393004 |
| 74107451 | PSX | Tandem Computers Incorporated | 1769128 |
| 74175712 | DYNABUS | TANDEM COMPUTERS INCORPORATED | — |
| 74670681 | APEX | Tandem Computers Incorporated | — |
| 73183623 | NONSTOP | TANDEM COMPUTERS INCORPORATED | — |
| 74659943 | CYBERWEB | Tandem Computers Incorporated | — |
| 75156837 | PAYMASTER | Tandem Computers Incorporated | 2348898 |
| 73678517 | TANDEM | TANDEM COMPUTERS INCORPORATED | 1489140 |
| 73670276 | INTEGRITY | TANDEM COMPUTERS INCORPORATED | 1479439 |
| 73426262 | TANDEM | TANDEM COMPUTERS INCORPORATED | 1416945 |
| 73415171 | TANDEM | TANDEM COMPUTERS INCORPORATED | 1424630 |
| 73315652 | GUARDIAN | Tandem Computers Incorporated | 1490826 |
| 75530548 | INFOCHARGER | Tandem Computers Incorporated | — |
| 75530516 | TANTAU | Tandem Computers Incorporated | — |
| 75467289 | CENTRICITY | Tandem Computers Incorporated | — |
| 75421190 | NETACD | Tandem Computers Incorporated | — |
| 75330088 | WEBCHARGER | Tandem Computers Incorporated | — |
| 75291846 | THE CLUSTER IS THE COMPUTER | Tandem Computers Incorporated | — |
| 75255215 | J6530 | Tandem Computers Incorporated | — |
| 75251586 | CLUSTERS IN A BOX | Tandem Computers Incorporated | — |
| 75250153 | TEKTON | Tandem Computers Incorporated | — |
| 75217737 | OBJECT RELATIONAL DATA MINING | Tandem Computers Incorporated | — |
| 75200132 | RELATIONAL DATA MINING | Tandem Computers Incorporated | — |
| 75175962 | ITP | Tandem Computers Incorporated | — |
| 75175961 | WEBMATRIX | Tandem Computers Incorporated | — |
| 75156836 | SIGNMASTER | Tandem Computers Incorporated | 2211521 |
| 75136501 | TSIMS | Tandem Computers Incorporated | — |
| 75135833 | TANDEM RELIABILITY NO LIMITS | Tandem Computers Incorporated | — |
| 75135831 | RELIABILITY NO LIMITS | Tandem Computers Incorporated | — |
| 75127514 | TEKTONIC | Tandem Computers Incorporated | — |
| 75117621 | APTM | Tandem Computers Incorporated | — |
| 75117604 | FOX | Tandem Computers Incorporated | — |
| 75112057 | TECTONIC | Tandem Computers Incorporated | — |
| 75104382 | TIM | Tandem Computers Incorporated | — |
| 75074827 | FARON | Tandem Computers Incorporated | — |
| 75048829 | REUSS | Tandem Computers Incorporated | — |
| 75048516 | AVENTRA | Tandem Computers Incorporated | — |
| 75017960 | DOORKEEPER | Tandem Computers Incorporated | — |
| 74704239 | SERVERWARE | Tandem Computers Incorporated | — |
| 74663101 | PTP | Tandem Computers Incorporated | 2124123 |
| 74632319 | SERVERWARE | Tandem Computers Incorporated | — |
| 74628400 | Serial No. 74628400 | Tandem Computers Incorporated | — |
| 74628399 | WHERE REMARKABLE IDEAS BECOME REALITY | Tandem Computers Incorporated | — |
| 74628398 | VISION POINT | Tandem Computers Incorporated | — |
| 74628397 | LEADING THE COMMUNICATIONS INDUSTRY INTO THE NEXT CENTURY | Tandem Computers Incorporated | — |
| 74621313 | VISION POINT | Tandem Computers Incorporated | — |
| 74613415 | PARALLEL CICS | Tandem Computers Incorporated | — |
| 74613272 | SERVERFABRIC | Tandem Computers Incorporated | — |
| 74594039 | VISION POINT | Tandem Computers Incorporated | — |
| 74573583 | TNET | Tandem Computers Incorporated | — |
