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| Patents for Leonard Norcross | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,690X | May 06, 1823 | L. Norcross | Machine for dressing mill stones | mill stone dressers | |
| 3,872X | May 18, 1824 | L. Norcross | Machine for making wrought nails | nail making machines | |
| 8,255X | Jun. 14, 1834 | L. Norcross | Elastic diving suit | ||
| 8,899X | Jun. 15, 1835 | L. Norcross | Accelerated spinner | spinner | |
| 8,900X | Jun. 15, 1835 | L. Norcross | Stump and rock extractor | stump elevators | |