10. ALBERT, W. (Mannesmannrohren-Werke). [High-Pressure Contact Furnaces for Benzine Synthesis.] German Patent 725,488, Aug. 6, 1942 (Cl. 12 g- 4.02). Chem Zentralb., 1943, I. P. 239: Chem. Abs., vol. 37. 1943. p. 6112.

PATENTS

10. ALBERT, W. (Mannesmannrohren-Werke). [High-Pressure Contact Furnaces for Benzine Synthesis.] German Patent 725,488, Aug. 6, 1942 (Cl. 12 g- 4.02). Chem Zentralb., 1943, I. P. 239: Chem. Abs., vol. 37. 1943. p. 6112.

Narrow, thin-walled tubes are arranged in bundles within the converter, they are held with solder until they can be welded in place.