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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 5535322 | Data processing system with improved work flow system and method A Work Flow Manager (WFM), or process manager, is the software to manage and control the flow of work items from one function to the next in a well-defined application process to achieve the complete processing of those work items. Applications of WFMs in... | 07/09/1996 |
| 5416841 | Cryptography system A cryptographic system includes a conventional DES facility for encrypting data using a key of N (=56) bits. The user however need only supply a first key of n bits, which is passed to a key management system. The key management system generates a second ... | 05/16/1995 |
