Rotary head drum apparatus including a rotary drum having a...
Rotary head drum device
Rotary head drum device having hollow portions in bonding...
Rotary magnetic head device and method of producing a rotary...
ROTARY MAGNETIC HEAD MECHANISM WITH THE HEAD HAVING A SMOOTH...
Rotating drum assembly and magnetic recording/reproducing...
Rotation balance control mechanism controlling a rotation...
Rotational balance adjustment mechanism for a rotary head...
Thin film magnetic head and rotary head assembly using thin...
Water quality monitor