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| Patents for Frederick R. Francis | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-461,965 | Dec. 27, 1949 | F.R. Francis | Lathe machine | metal lathe accessories and attachments | |
| 2,495,927 | Jan. 31, 1950 | F.R. Francis | Lathe machine | metal lathe accessories and attachments | |