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| All Patents in class 235/120 | |||||
| Number | Date | Patentee | Title | Type | |
| 17,230 | May 05, 1857 | R. Porter | Improvement in the buckets of automatic grain-weighing machines | grain scales | |
| 165,659 | Jul. 20, 1875 | W.M. Bullock | Improvement in Registering Board-Rules | lumber rules | |
| 502,649 | Aug. 01, 1893 | H.C. Andersen | Speed Indicator for Shafting | measurement gauges | |
| 873,754 | Dec. 17, 1907 | P.L. Johnson | Registering Counter | rpm speed gauges and tachometers | |