Document Type and Number:
Japanese Patent JPH0311899
Kind Code:
Y2
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Application Number:
JP15175984U
Publication Date:
March 20, 1991
Filing Date:
October 09, 1984
Export Citation:
International Classes:
H01J61/34; H01J1/00; H01J7/26; H01S3/03; (IPC1-7): H01S3/03; H01S3/03; H01J7/26
Next Patent: JPH0311900