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| All Patents in class 33/272 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,608X | Jan. 17, 1835 | W.Y. Young | Surveying Compass | surveyor | |
| 8,631X | Feb. 11, 1835 | J. Eames | Surveyor's Theodolite | surveyor | |