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| Patents for E. S. Rockafellar | |||||
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| Number | Date | Patentee | Title | Type | |
| 664,361 | Dec. 18, 1900 | H.F. Renner | Pipe-vise | pipe and chain vises | |
| 672,552 | Apr. 23, 1901 | J.P. Harrington | Shaft-upsetting hammer | drop hammers | |