| Search Again | Story County, Iowa Inventory Patents |
Story Co. Home Page |
| Name | Patent Title | Patent Number |
City | Year |
|---|---|---|---|---|
| John F. DOHERTY | communication device, apparatus, and method utilizing pseudonoise signal for acoustical echo cancellation | 05327496 | Ames | 1994 |
| John F. DOHERTY | communication device apparatus and method utilizing pseudonoise signal for acoustical echo cancellation | RE035574 | Ames | 1997 |
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