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Zusammenfassung
Gebrauchspatentzeichnungen
Berühmte Patentzeichnungen aus dem National Archives, Washington DC
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Tags
Wasser-
Spielzeug
Ente
Unterschrift
amos hart
Punkt 1
Uhrwerk
aufziehen
aufziehen
Aufzieh-Ente
Uhrwerk Ente
Patentanmeldung
Patente
Patentzeichnungen
alte Patente
Gebrauchsmusterzeichnungen
Wasserspielzeug
Erfindungen
Datum
1870
in sammlungen
Quelle
The U.S. National Archives
Link
Copyright-info
No known copyright restrictions