Document Type and Number:
Japanese Patent JPS5221176
Kind Code:
B1
Application Number:
JP8874071A
Publication Date:
June 08, 1977
Filing Date:
November 09, 1971
Export Citation:
International Classes:
H02M7/162; H02P7/292; (IPC1-7): H02M7/155; G05F1/44; H02P13/16