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| Patents for Eugene Elterich | |||||
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| Number | Date | Patentee | Title | Type | |
| 441,509 | Nov. 25, 1890 | F. Schoff | Drill-support | portable metal drilling machines | |
| 453,537 | Jun. 02, 1891 | F.H. Bates, F.G. Bates | Ratchet Tool | ratchet wrenches | |
| 468,519 | Feb. 09, 1892 | R.B. Haines, Jr. | Micrometer Gage | micrometers | |
| 482,572 | Sep. 13, 1892 | T.S. Disston | Saw Filing Machine | filing machines | |