Device for impelling and propelling fluids or gases or the like.
www.google.com/patents/US2361676
Maximum coupling with the medium.
Негізгі бет High Efficiency Impeller / Propeller
Device for impelling and propelling fluids or gases or the like.
www.google.com/patents/US2361676
Maximum coupling with the medium.
Пікірлер: 12