COIN MANUFACTURE METHOD

coin manufacture. SUBSTANCE: method involves forming decorative surface with profile of isosceles trapezium on billet; embossing microrelief of symbol members and forming different types of patterns and stamping billet. Decorative surface on end of billet is made in the form of groove by squeezing b...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TRUNOV V.A, LITVINCHUK S.V, VASIL'EV O.JU, GRISHKOV A.V, TRUBKIN B.A, IVANTSOV A.V, NJUNJAEV V.I
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BRACELETS COINS HABERDASHERY HUMAN NECESSITIES JEWELLERY OTHER PERSONAL ADORNMENTS
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