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| File information | |
| Filename: | us0d0008165-001.jpg |
| Keywords: | East Cambridge / Middlesex / Massachusetts / F. P. Hale / F. C. Hale / George Gray |
| Inventor's Name: | George W. Lowry |
| Patent Date: | February 23, 1875 |
| Pattern Name/Number: | Unknown |
| Original Manufacturer: | Unknown |
| Date added: | Apr 21, 2019 |