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| Patents for Henry B. Lothrop | |||||
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| Number | Date | Patentee | Title | Type | |
| 389,139 | Sep. 04, 1888 | A.C. Dumontier | Knife for planing machines | cutters | |
| 441,603 | Nov. 25, 1890 | S. Tideman | Die and Die Stock | tap wrenches and die stocks | |
| 461,587 | Oct. 20, 1891 | C.H. Norton | Stand for Grinding and Polishing Wheels | polishing and buffing machinery | |