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| Patents for Carl H. Schmidgall | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,297,740 | Mar. 18, 1919 | C.H. Schmidgall | Boring-tool | mortising machines | |
| 1,669,423 | May 15, 1928 | C.H. Schmidgall | Boring tool | mortising machines | |