Document Type and Number:
Japanese Patent JPS57150801
Kind Code:
U
Application Number:
JP3873081U
Publication Date:
September 21, 1982
Filing Date:
March 18, 1981
Export Citation:
International Classes:
G01D7/00; G02B5/04; G02B6/00; (IPC1-7): G02B5/04; G01D7/00
Previous Patent: JPS57150800
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