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| All Patents in class 177/136 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,010,529 | Nov. 28, 1961 | C.E. Marion, G.C. Clark, R.T. Bartlett | Scale Weighbridge Lock-Out Means | scales and balances | |
| 3,990,032 | Nov. 02, 1976 | P. Barrett, H.J. Keen, C.H. Knodel, D.H. Fish | Vehicle Weighing System | scales and balances | |