19/10/1951 Automatic machine to sharpen peners
Patent of introduction Nº 200.058
https://armia-eibar.eus/en/research/digital-archive/simes-careaga-trevino-y-cia-s-r-c/patents/19-10-1951-automatic-machine-to-sharpen-peners
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19/10/1951 Automatic machine to sharpen peners
Patent of introduction Nº 200.058
