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Alfons Lomberg
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Bottrop, DE
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last 30 patents
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Patent Grant
Extrusion molding tool
Patent number
4,909,720
Issue date
Mar 20, 1990
Krupp Widia GmbH
Alfons Lomberg
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Extrusion tool for producing a drill bit blank
Patent number
4,831,859
Issue date
May 23, 1989
Fried. KRUPP Gesellschaft mit beschrankter Haftung
Peter Cleve
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Extrusion tool for producing hard-metal or ceramic drill blank
Patent number
4,779,440
Issue date
Oct 25, 1988
Fried.Krupp Gesellschaft mit beschraenkter Haftung
Peter Cleve
B28 - WORKING CEMENT, CLAY, OR STONE