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| Patents for Charles H. Field | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 17,146 | Apr. 28, 1857 | C.H. Field | Machine for engraving designs on watch and locket cases, &c. | |
| 66,819 | Jul. 16, 1867 | C.H. Field | Rosette engine | ||
 | 192,247 | Jun. 19, 1877 | C.H. Field | Improvement in engraving-machines | |
| 667,512 | Feb. 05, 1901 | C.H. Field | Gear Cutting Engine | ||