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| All Patents in class 404/113 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,209,656 | Jul. 30, 1940 | A.W. Mall | Vibrator | ||
| 2,856,828 | Oct. 21, 1958 | G.H. Brown, E.G. Lewis | Impacting machine | compacting machines | |
| 2,894,435 | Jul. 14, 1959 | G.H. Brown | Impacting machine | compacting machines | |
| 3,386,353 | Jun. 04, 1968 | G.S. Wells | Vibratory Compacting Machines | compacting machines | |