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| All Patents in class 70/429 | |||||
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| Number | Date | Patentee | Title | Type | |
| 158,121 | Dec. 22, 1874 | S.T. Proudman | Improvement in key-fasteners | door and window hardware | |
| 344,416 | Jun. 29, 1886 | C.A. Singer | Key-fastener | ||