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| Patents Granted on 1808-05-16 | |||||
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| Number | Date | Patentee | Title | Type | |
| 870X | May 16, 1808 | J. Bailey, Jr. | Friction roller door hinge | ||
| 871X | May 16, 1808 | W. Rhodes | Pumps | plumber | |
| 872X | May 16, 1808 | W. Rhodes | Floating dry dock for cleansing the bottoms of vessels | ||