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| Patents for Sherman Hartwell Hubbard | |||||
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| Number | Date | Patentee | Title | Type | |
| 439,951 | Nov. 04, 1890 | T.C. Hendey | Swaging Machine | ||
| 439,952 | Nov. 04, 1890 | T.C. Hendey | Swaging Machine | ||
| 452,768 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber | |
| 452,769 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber | |
| 452,770 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber | |