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| All Patents in class 134/77 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,129,463 | Sep. 06, 1938 | E.P. Bullard | Station Type Treatment Machine | ||
| 2,328,050 | Aug. 31, 1943 | E.P. Bullard, III | Conveyer | ||
| 2,671,861 | Mar. 09, 1954 | E.P. Bullard, III | Material-Handling Apparatus and Control Therefor | conveyors and hoppers | |