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| File information | |
| Filename: | us0d0007941-001.jpg |
| Keywords: | Boston / Suffolk / Massachusetts / F. Curtis / W. E. Boardman |
| Inventor's Name: | William G. Fletcher |
| Patent Date: | December 22, 1874 |
| Pattern Name/Number: | Unknown |
| Original Manufacturer: | Unknown |
| Date added: | Apr 21, 2019 |