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| Patents for Henry Sillman | |||||
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| Number | Date | Patentee | Title | Type | |
| 135,164 | Jan. 21, 1873 | H. Sillman | Improvement in band-saw gangs | band sawmills | |
| 138,443 | Apr. 29, 1873 | H. Sillman | Improvement in band sawing-machines | bandsaws | |