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| All Patents in class 14/4 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,169X | Jan. 28, 1820 | I. Town | Truss Bridge | ||
| 5,862X | Mar. 06, 1830 | S. Long | Wooden or frame bridges | bridges | |
| 8,743X | Apr. 03, 1835 | I. Town | Improvement on his bridges | truss bridges | |
| 9,340X | Jan. 23, 1836 | S.H. Long | Wooden bridges | bridges | |