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| Patents for L. A. Doeltz | |||||
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| Number | Date | Patentee | Title | Type | |
| 415,761 | Nov. 26, 1889 | A. Worden | Tire Bolt Wrench | tire bolt wrenches | |
| 421,953 | Feb. 25, 1890 | H. Mattullath | Sanding-machine for continuous barrel-staves | cooper | |