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Zusammenfassung
Diagramm von Patent 1,345,655 Holzschraubenpumpe vom US-Patentamt. Bild zur Verwendung in A. Baldwin Wood and Wood Screw Pump. Bild von der Website des Patentamts
Tags
Patente
Patentzeichnungen
uns Patentamt
a baldwin wood
US-Patentzeichnungen
Diagramm
hohe Auflösung
Erfindungen
Datum
06/07/1920
Quelle
USPTO
Link
Copyright-info
public domain