| Number | Name | Date | Kind | 
|---|---|---|---|
| 3533076 | Perkins et al. | Oct 1970 | |
| 3585597 | Holmerud | Jun 1971 | |
| 3618032 | Goldsberry et al. | Nov 1971 | |
| 3654609 | Bluethman et al. | Apr 1972 | |
| 3737863 | Rowland et al. | Jun 1973 | |
| 3815104 | Goldman | Jun 1974 | |
| 3949375 | Ciarlo | Apr 1976 | |
| 3996562 | Reach et al. | Dec 1976 | |
| 4010356 | Evans et al. | Mar 1977 | 
| Entry | 
|---|
| Burroughs Series L2000 Electronic Billing Computer, Jan. 1969. | 
| IBM Brochure, Storage and Information Retrieval System/Virtual Storage-Thesaurus and Linguistic Integrated System, Aug. 1976. |