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| Patents Granted on 1860-04-03 | |||||
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| Number | Date | Patentee | Title | Type | |
| 27,677 | Apr. 03, 1860 | E. Armstrong | Steam Puppet Valve | steam engine valves | |
| 27,682 | Apr. 03, 1860 | L.B. Batcheller | Machine for manufacturing barrel-heads | barrel making machines | |
| 27,690 | Apr. 03, 1860 | T.P. Butterfield | Device for tilting the bolt in shingle-machines | shingle machines | |
| 27,696 | Apr. 03, 1860 | J. Cook | Lathe | pattern lathes | |
| 27,704 | Apr. 03, 1860 | F. Douglas | Improved steam-trap | steam engines | |
| 27,705 | Apr. 03, 1860 | N. Drake | Corn Sheller | corn shellers | |