Document Type and Number:
Japanese Patent JPS4899072
Kind Code:
U
Application Number:
JP2427272U
Publication Date:
November 22, 1973
Filing Date:
February 28, 1972
Export Citation:
International Classes:
H01J7/26; H01S3/03; H01S3/04; H01S3/041; (IPC1-7): H01S3/03; H01J7/26; H01S3/04