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| Patents for Thomas R. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,907X | Jul. 16, 1824 | T.R. Williams | Retreating spring lancet | ||
| 4,416X | Apr. 27, 1826 | T.R. Williams, H. Pinkus | Improvement called forest rail roads | ||
| 4,467X | Jun. 14, 1826 | T.R. Williams | Instrument used for operating on the cataract | ||
| 5,992X | May 22, 1830 | T.R. Williams | Felt for bottoms of vessels and other purposes | felt making machines | |