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Alexandr A. Zayats
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Dnepropetrovsk, SU
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last 30 patents
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Working mandrel and method of rolling elongate hollow pieces in a m...
Patent number
4,487,049
Issue date
Dec 11, 1984
Dnepropetrovsky Metallurgichesky Institut
Valentin N. Danchenko
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...