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| Patents for Ralph W. Bailey | |||||
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| Number | Date | Patentee | Title | Type | |
| 679,934 | Aug. 06, 1901 | R.W. Bailey | Protractor Attachment for Center Finding Instruments | protractors | |
| 741,292 | Oct. 13, 1903 | R.W. Bailey | Fine Adjustment for Protractors | protractors | |