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Mihail Konstantinov
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Sofia, BG
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last 30 patents
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Patent Grant
Method of and apparatus for the pressworking of articles
Patent number
4,420,964
Issue date
Dec 20, 1983
V M E I "Lenin"
Alexander S. Petrov
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
Apparatus for applying protective coatings to graphite bodies
Patent number
4,226,207
Issue date
Oct 7, 1980
DSO "Cherna Metalurgia"
Ivan V. Genev
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES