Method and device for continuous smelting and production of glass in ordinary and other fiberglass furnaces

The method and device for continuous melting and production of glass in ordinary and other fiberglass furnaces: No. 2528/28.Declared.03/16/1879.Issuance 05/05/1881 / Friedrich Siemens.- [St. Petersburg]: Type.Exped.Zagot.state.papers, 1881. -4 p., 1 l.Il .. -The privilege issued from the Department of Trade and Manufactory in 1881. Fridrich Siemens, on the method and devices for continuous melting and production of glass in ordinary and other glass -melting furnaces.Before the text: 28.Ex.: With a handle.litter..I. Siemens, Frederick 1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS