Kirchner; Michael C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kirchner; Michael C..The latest application filed is for "virtual pbx system".
- Kirchner; Michael C. - Cedar Rapids IA
- Kirchner; Michael C. - Ceder Rapids IA
| Patent | Date |
|---|---|
| Virtual PBX system Grant 7,496,091 - Galvin , et al. February 24, 2 | 2009-02-24 |
| Virtual PBX system App 20040160951 - Galvin, Thomas J. ; et al. | 2004-08-19 |
| Virtual PBX system Grant 6,775,272 - Galvin , et al. August 10, 2 | 2004-08-10 |
| Virtual PBX system App 20020114329 - Galvin, Thomas J. ; et al. | 2002-08-22 |
| Virtual PBX system Grant 6,393,017 - Galvin , et al. May 21, 2 | 2002-05-21 |
| TCP/IP-based client interface to network information distribution system servers Grant 6,263,370 - Kirchner , et al. July 17, 2 | 2001-07-17 |
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