Fieldhouse; Douglas M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Fieldhouse; Douglas M..The latest application filed is for "toll free calling account recharge system and method".
- Fieldhouse; Douglas M. - Lake Oswego OR
| Patent | Date |
|---|---|
| Toll free calling account recharge system and method Grant 7,979,051 - Fieldhouse , et al. July 12, 2 | 2011-07-12 |
| Toll Free Calling Account Recharge System And Method App 20090233576 - Fieldhouse; Douglas M. ; et al. | 2009-09-17 |
| Toll-free calling account recharge system and method Grant 7,539,480 - Fieldhouse , et al. May 26, 2 | 2009-05-26 |
| Toll-free Calling Account Recharge System And Method App 20080057903 - Fieldhouse; Douglas M. ; et al. | 2008-03-06 |
| Toll free calling account recharge system and method Grant 7,242,922 - Fieldhouse , et al. July 10, 2 | 2007-07-10 |
| Telephone calling account system and method App 20030048888 - Hopper, Eric L. ; et al. | 2003-03-13 |
| System and method for creating a multi-use card having banking and telephone calling accounts App 20030037000 - Fieldhouse, Douglas M. | 2003-02-20 |
| Toll free calling account recharge system and method App 20020119767 - Fieldhouse, Douglas M. ; et al. | 2002-08-29 |
| Telephone calling account system and method Grant 6,404,866 - Hopper , et al. June 11, 2 | 2002-06-11 |
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