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| All Patents in class 292/31 | |||||
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| Number | Date | Patentee | Title | Type | |
| RX-18 | Dec. 10, 1839 | W.H. Mackrell | Improvement in Fasteners for Shutters and Blinds | shutters and blinds | |
| 92,970 | Jul. 27, 1869 | L.D. Howard | Improved shutter-fastener | ||