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| All Patents in class 212/324 | |||||
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| Number | Date | Patentee | Title | Type | |
| 879,473 | Feb. 18, 1908 | E.A. Elder, T.C. Kennedy | Storage Apparatus | conveyors and hoppers | |
| 902,300 | Oct. 27, 1908 | T.C. Kennedy | Storage Apparatus | conveyors and hoppers | |