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Patents for Henry P. White | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 643,703 | Feb. 20, 1900 | H.P. White | Drill-grinding machines | |
![]() | 684,890 | Oct. 22, 1901 | H.P. White | Drill-grinder | |
697,584 | Apr. 15, 1902 | H.P. White | Drill-grinding machine |