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| Patents for N. A. Acker | |||||
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| Number | Date | Patentee | Title | Type | |
| 392,116 | Oct. 30, 1888 | R.B. Gilchrist | Cork-extractor | bar corkscrews | |
| 644,675 | Mar. 06, 1900 | J.T. Ludlow | Rope-tramway system | material handling | |
| D32,795 | Jun. 05, 1900 | J. Simonds | Design for a Member for Saw Handles | saw handles | |
| 840,418 | Jan. 01, 1907 | W.F. Arnold | Plane Frog | plane frogs | |
| 879,175 | Feb. 18, 1908 | F.A. Huntington | Crushing-mill | ore processing apparatus | |