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| Patents for Isaac B. Hartwell | |||||
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| Number | Date | Patentee | Title | Type | |
| 681 | Apr. 07, 1838 | R. Daniels | Crosscut eclipse shearing-machine for shearing woolen cloths | cloth shearing machines | |
| 13,169 | Jul. 03, 1855 | I.B. Hartwell | Machine for cutting cavities spherical, ellipsoidal, &c. | wood lathes | |