Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8484346 | Simultaneous maintenance of multiple versions of a web-based business information system | Christopher Blum, Theodore R. Rice | 2013-07-09 |
| 7970901 | Phased rollout of version upgrades in web-based business information systems | Christopher Blum, Theodore R. Rice | 2011-06-28 |
| 7558843 | Phased rollout of version upgrades in web-based business information systems | Christopher Blum, Theodore R. Rice | 2009-07-07 |
| 4628926 | Carbon dioxide rebreathing apparatus | David T. Duncan, John McElligott, Charles W. Williams | 1986-12-16 |
| 4508116 | Carbon dioxide rebreathing apparatus | David T. Duncan, John McElligott, Charles W. Williams | 1985-04-02 |