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| Patents for H. C. Newman | |||||
| Number | Date | Patentee | Title | Type | |
| 432,144 | Jul. 15, 1890 | W.J. Muncaster | Machine for Polishing Shafting | polishing machines | |
| 434,777 | Aug. 19, 1890 | R.H. Greene | Gage-Bracket | clapboard markers | |