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| Patents Granted on 1828-04-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,086X | Apr. 28, 1828 | P. Cooper | Converting alternate rectilinear to rotary motion | ||
| 5,087X | Apr. 28, 1828 | I. Call | Saw mills | sawmills | |