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| Patents Granted on 1865-11-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,037 | Nov. 21, 1865 | R.W. Gardner | Governor Valve | steam engine governors | |
| 51,048 | Nov. 21, 1865 | J. Holroyd, W. Holroyd | Die-Stock and Tap-Wrench | tap and die holders | |
| 51,058 | Nov. 21, 1865 | N.B. Gatchell, F.H. James | Clamping Punty | glassmaker | |
| 51,065 | Nov. 21, 1865 | E. Hinman, H. Loftie | Drill | ||
| 51,100 | Nov. 21, 1865 | J. Stufflebeen | Improvement in mortising-machines | mortising machines | |