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| Patents for James H. Loomis | |||||
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| Number | Date | Patentee | Title | Type | |
| 377,867 | Feb. 14, 1888 | J. Stevens | Draftsman's Compass | compasses | |
| 429,069 | May 27, 1890 | W.H. Steward | Calipers or Dividers | calipers | |
| 432,578 | Jul. 22, 1890 | J. Stevens | Calipers or Dividers | calipers | |
| 437,308 | Sep. 30, 1890 | E.R. Markham | Surface Gage | surface gauges | |