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DE159902C
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DE1937897A1
(de )
1970-09-17
Kopiermaschine,insbesondere Nachformfraesmaschine
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DE17918C
(de )
Zirkel mit Parallelführung der Schenkel
AT112764B
(de )
1929-04-10
Ellipsenzirkel.
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AT83869B
(de )
1921-05-10
Perspektograph.
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DE25091C
(de )
Pantograph
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DE41284C
(de )
Zirkel mit drei Armen
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DE307475C
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DE36024C
(de )
Instrument zum Anfertigen perspektivischer Bilder von geometrischen Figuren
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