| Search Again | Story County, Iowa Inventory Patents |
Story Co. Home Page |
| Name | Patent Title | Patent Number |
City | Year |
|---|---|---|---|---|
| Roger M. BERGMAN | method of chlorinating metals with carbon tetrachloride and carbon dioxide | 03460918 | Ames | 1969 |
| Roger M. BERGMAN | preparation of tantalum metal | 03597192 | Ames | 1971 |
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