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| Patents for Max Knobel | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,624,121 | Jan. 06, 1953 | M. Knobel | Micrometer Measuring Device | micrometers | |
| 2,624,122 | Jan. 06, 1953 | M. Knobel | Inspection Gauge | measurement gauges | |