首页>
外国专利>
method for the preparation of ethyl cellulose derivatives, method for the manufacture of articles from such derivatives.method for coating of objects with such a derivative and articles in whole or in part, existing from such ethyl cellulose derivatives.
method for the preparation of ethyl cellulose derivatives, method for the manufacture of articles from such derivatives.method for coating of objects with such a derivative and articles in whole or in part, existing from such ethyl cellulose derivatives.
