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Patents for Herman C. Frentzel
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PictureNumberDatePatenteeTitle
  2,546,196Mar. 27, 1951H.C. Frentzel, G.F. MorrisonVise for sawing machines
2,546,197Mar. 27, 1951H.C. Frentzel, G.F. MorrisonLock device for printers' chases
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