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| Patents for Henry Mason | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,017,718 | Feb. 20, 1912 | A.G. Walls | Automatic spooling-machine | |
 | 1,270,573 | Jun. 25, 1918 | A.G. Walls | Pump | |
 | 1,395,213 | Oct. 25, 1921 | A.G. Walls | Balling-machine | |