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| Patents for W. E. Hagan | |||||
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| Number | Date | Patentee | Title | Type | |
| 389,305 | Sep. 11, 1888 | W. T.Kellogg | Portable forge | forging machines | |
| 418,411 | Dec. 31, 1889 | L.B. Holmes | Speed Indicator | measurement gauges | |
| 443,284 | Dec. 23, 1890 | W. T.Kellogg | Mechanism for converting motion | forging machines | |
| 457,535 | Aug. 11, 1891 | F.B. Ide | Chain Wrench | chain and strap wrenches | |
| 492,626 | Feb. 28, 1893 | F.B. Ide | Hand Wrench | quick adjust wrenches | |
| 547,829 | Oct. 15, 1895 | J.H. Williams | Handle to use Smooth Plane as a Floor Plane | plane handles | |