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| Patents for Alexander Groundwater Walls | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,017,718 | Feb. 20, 1912 | A.G. Walls | Automatic spooling-machine | textile machines | |
| 1,270,573 | Jun. 25, 1918 | A.G. Walls | Pump | aircraft | |
| 1,395,213 | Oct. 25, 1921 | A.G. Walls | Balling-machine | textile machines | |