3804324TABLE TOP, NOISE SUPPRESSED CENTRIFUGE1974-04-16Sinn et al. 2018837Centrifugal device1935-10-29Collatz Foreign References: GB4480 GB188704480A Other References: Grenzschicht-Theorie (Boundary Layer Theory) by Dr. Hermann Schlichting, G. Braun publishers, Karlsruhe, Germany, 5th edition, p. ...