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Patents for Ludwig F. Perwas
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,426,436Feb. 11, 1969L.F. PerwasProjected Measuring Surface Gage Blocksmeasurement gauges
3,754,333Aug. 28, 1973L.F. PerwasScriber Setting Height gageheight gages
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