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| Patents for John Gorman | |||||
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| Number | Date | Patentee | Title | Type | |
| 20,553 | Jun. 15, 1858 | E. Drake | Feed-motion of shingle machines | shingle machines | |
| 45,592 | Dec. 27, 1864 | E. Drake | Improvement in shingle machines | shingle machines | |
| 218,620 | Aug. 19, 1879 | E. Drake | Improvement in machines for sawing shingles | shingle machines | |