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| All Patents in class 33/23.02 | |||||
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| Number | Date | Patentee | Title | Type | |
| 432,328 | Jul. 15, 1890 | J.A. Painter | Center and Mortise-Gage | center marking gauges | |
| 434,742 | Aug. 19, 1890 | B.H. Toquet | Calipers or Dividers | calipers | |