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| Patents for Otis A. Earl | |||||
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| Number | Date | Patentee | Title | Type | |
| 614,092 | Nov. 15, 1898 | G.T. Eames | Drill-grinder | drill sharpening machines | |
| 626,438 | Jun. 06, 1899 | S.F. Nicolai | Wire Splicing Tool | ||
| 633,323 | Sep. 19, 1899 | W.K. Loughborough | Table or Desk Attachment for Chairs or Seats | chairs | |
| 643,703 | Feb. 20, 1900 | H.P. White | Drill-grinding machines | drill sharpening machines | |
| 684,890 | Oct. 22, 1901 | H.P. White | Drill-grinder | drill sharpening machines | |
| 1,201,162 | Oct. 10, 1916 | G.T. Eames | Mandrel-press | arbor presses | |