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| Patents for Alfred A. Marshall | |||||
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| Number | Date | Patentee | Title | Type | |
| 207,450 | Aug. 27, 1878 | G.F. Simonds, D. Simonds, A.A. Marshall | Improvement in circular saws | sawblades | |
| 237,617 | Feb. 08, 1881 | G.F. Simonds, D. Simonds, A.A. Marshall | Circular saw | sawblades | |
| 239,863 | Apr. 05, 1881 | A.A. Marshall, D. Simonds, G.F. Simonds | Method of Adjustment of the Tension of Circular Saws | tool making machines | |