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Patents for Richard L. Berkson | |||||
Number | Date | Patentee | Title | Type | |
2,564,459 | Aug. 14, 1951 | R.L. Berkson | Sheet metal brake | sheet metal brakes | |
2,694,920 | Nov. 23, 1954 | J.F. Courtney | Multiple door locking system and apparatus | motor vehicles |