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| Patents for Francis Jerdone Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,274,770 | Aug. 06, 1918 | P. Plantinga | Lathe | backing off attachments | |
| 1,274,771 | Aug. 06, 1918 | P. Plantinga | Shaper and the Like | metal shapers | |