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| Patents for Leo Hayes | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,571,783 | Feb. 02, 1926 | J.R. Aulenback | Adjustable Gage | measuring tools | |
| 1,818,869 | Aug. 11, 1931 | E.J. Reede | Tool | pliers | |
| 1,867,505 | Jul. 12, 1932 | H.G. Graner | Pliers | pliers | |