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| All Patents in class 417/503 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 615,213 | Nov. 29, 1898 | W.L. Deming | Spraying apparatus | ||
| 1,297,035 | Mar. 11, 1919 | J.M. Stratton | Pump | ||
| 1,364,823 | Jan. 04, 1921 | J.J. Aull | Gas Engine Primer | ||