| 4584639 | Computer Security System (Factory)
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| 5781633 | Capability security for transparent distributed object systems
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| 5790669 | Lightweight non repudiation system and method
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| 5852666 | Capability security for distributed object systems
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| 5960087 | Distributed garbage collection system and method
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| 6049838 | Persistent Distributed Capabilities
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| 6073242 | Electronic authority server
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| 6079018 | System and Method for Generating Unique Secure Values for Digitally Signing Documents
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| 6161121 | Generic Transfer of Exclusive Rights
|