FIELD: processing of natural stones. SUBSTANCE: method involves providing longitudinal pressing of amber by means of rollers; heating, pressing and cooling amber while removing products of thermal destruction released during heating. EFFECT: simplified method and wider range of articles manufactured by method. 3 dwg
Title | Year | Author | Number |
---|---|---|---|
AMBER PROCESSING METHOD | 2000 |
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Authors
Dates
2002-02-20—Published
2000-08-02—Filed