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| All Patents in class 177/97 | |||||
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| Number | Date | Patentee | Title | Type | |
| 403,988 | May 28, 1889 | C.H. Cooley | Automatic Grain Scales | grain scales | |
| 442,715 | Dec. 16, 1890 | F.H. Richards | Regulator grain-weigher | ||
| 442,716 | Dec. 16, 1890 | F.H. Richards | Regulator grain-weigher | ||
| 442,717 | Dec. 16, 1890 | F.H. Richards | Grain-weigher | ||
| 442,722 | Dec. 16, 1890 | C.H. Cooley | Grain-weigher | ||
| 442,723 | Dec. 16, 1890 | C.H. Cooley | Grain-weigher | ||
| 443,933 | Dec. 30, 1890 | F.H. Richards, C.H. Cooley | Grain-weigher | ||