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| Patents for William Howard | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,281X | Nov. 25, 1828 | W. Howard | Railway carriage | ||
| 5,306X | Dec. 10, 1828 | W. Howard | Improved locomotive carriages for railroads | ||
| 6,515X | Apr. 23, 1831 | W. Howard | Carriage for railroads by which the flanges of the wheels are prevented from impinging on the rails | ||
| 7,191X | Aug. 02, 1832 | W. Howard | Switches or turn-outs for railways | ||
| 115,939 | Jun. 13, 1871 | L. Day | Improvment in Corn Shellers | miller | |