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| Patents for H. D. Heiser | |||||
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| Number | Date | Patentee | Title | Type | |
| 85,341 | Dec. 29, 1868 | W.N. Jones, G.S. Snyder, H.F. Snyder | Improvement in casting bearings for machinery | foundryman | |
| 115,538 | May 30, 1871 | H.F. Snyder | Improvement in rolls for gang saw-mills | sawmills | |
| 240,048 | Apr. 12, 1881 | H.F. Snyder | Machine for sawing shingles | shingle machines | |