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| Patents for Earl J. Bullard | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,209,071 | Jul. 23, 1940 | E.J. Bullard | Grinding and Lapping Machine | lapping machines | |
| 2,391,388 | Dec. 25, 1945 | E.J. Bullard | Grinding and Lapping Machine | lapping machines | |
| 2,480,285 | Aug. 30, 1949 | E.J. Bullard | Lapping Machine | lapping machines | |
| 2,565,590 | Aug. 28, 1951 | E.J. Bullard | Lapping Machine | lapping machines | |