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Patents for Hugh Hill | |||||
Number | Date | Patentee | Title | Type | |
602,449 | Apr. 19, 1898 | H. Hill | Boring Tool | ||
622,625 | Apr. 04, 1899 | H. Hill | Cutting Tool | lathe tools | |
647,137 | Apr. 10, 1900 | H. Hill | Cutting Tool | lathe tools |