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| Patents for Charles E. Hall | |||||
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| Number | Date | Patentee | Title | Type | |
| 203,616 | May 14, 1878 | L.A. Hays | Improvement in saw-filing machines | saw sharpening machines | |
| 358,607 | Mar. 01, 1887 | C.E. Hall | Tool Holder for Lathes | metal lathe accessories and attachments | |