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| Patents for Herbert B. Sperry | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,555,887 | Oct. 06, 1925 | H.B. Sperry | Ensilage cutter | animal food preparation machinery | |
| 1,630,588 | May 31, 1927 | H.B. Sperry | Blower pipe for wind stackers | ||
| 1,635,803 | Jul. 12, 1927 | H.B. Sperry | Tongue-supporting truck | ||