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| Patents for Cockle Separator Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 349,390 | Sep. 21, 1886 | R. Wilcox, G.A. Gilbert | Conveyor for grain, etc. | |
 | 405,869 | Jun. 25, 1889 | E. Bretney | Dust-collector | |
 | 446,507 | Feb. 17, 1891 | E. Bretney | Dust-collector | |