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| Patents for H. A. Van Syoc | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,027,537 | May 28, 1912 | C.F. Haldeman | Feed-cutter | ||
| 1,094,557 | Apr. 28, 1914 | C.F. Haldaman | Feeding mechanism for ensilage-cutters | animal food preparation machinery | |
| 1,121,921 | Dec. 22, 1914 | C.F. Haldeman | Gearing | ||
| 1,129,349 | Feb. 23, 1915 | C.F. Haldeman | Ensilage-cutter | animal food preparation machinery | |