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| Patents for George C. Howard | |||||
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| Number | Date | Patentee | Title | Type | |
| 28,639 | Jun. 05, 1860 | J.F. Schuyler | Apparatus for dressing grindstones | grinder dressers | |
| 28,864 | Jun. 26, 1860 | G.C. Howard | Printing-press | printing presses | |
| 42,738 | May 17, 1864 | R. Barkley, L. Semple | Grindstone-dresser | grinder dressers | |
| 61,738 | Feb. 05, 1867 | G.C. Howard | Improvements in dressing grindstones | grinder dressers | |
| 89,834 | May 04, 1869 | G.C. Howard | Improvement in hat-presses | hat making | |