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| Patents for Sarah T. Frommeyer | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,037,735 | Sep. 03, 1912 | H.E. Derbyshire | Safety-latch for board drop-hammers | drop hammers | |
| 1,068,225 | Jul. 22, 1913 | H.E. Derbyshire | Drop-hammer roll-release mechanism | drop hammers | |