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| Patents for Louis R. Heinrichs | |||||
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| Number | Date | Patentee | Title | Type | |
| 820,723 | May 15, 1906 | O. Matheney | Compound Tool | multipurpose fence tools | |
| 888,498 | May 26, 1908 | A.F. Henrikson | Calipers & Dividers | calipers | |