A New Type of Silent and High Efficiency Fan
噪音少く風量の多い扇風機の一新翼に就て

M. TAKAHASHI, G. YAMAMOTO, Y. MIYAMAE
1937 The Journal of the Institute of Electrical Engineers of Japan  
doi:10.11526/ieejjournal1888.57.489 fatcat:f5qm6j4gknddtjesm3o5ejh37i