首页>
外国专利>
Transformer or reactance coil having to be switched in parallel, in various 872,615 filed june 10 from the iron body lying, coaxial winding portions to the same number of windings
Transformer or reactance coil having to be switched in parallel, in various 872,615 filed june 10 from the iron body lying, coaxial winding portions to the same number of windings