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| Patents for Helen L. Aichholz | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,057,762 | Apr. 01, 1913 | A. Muehlmatt | Holder for engraving-blocks | ||
| 1,073,414 | Sep. 16, 1913 | C.E. Francis | Veneer-press for manufacturers of woodworking material | veneer machines | |