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| Patents for Robert J. Saum | |||||
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| Number | Date | Patentee | Title | Type | |
| 983,461 | Feb. 07, 1911 | R.J. Saum | Tool-holder | lathe tool holders and tool posts | |
| 1,168,428 | Jan. 18, 1916 | R.J. Saum | Tool-holder | lathe tool holders and tool posts | |
| 1,168,794 | Jan. 18, 1916 | J. Enoch | Expanding mandrel | metal lathe accessories and attachments | |