Document Type and Number:
Japanese Patent JPS4931383
Kind Code:
A
Application Number:
JP7107972A
Publication Date:
March 20, 1974
Filing Date:
July 14, 1972
Export Citation:
International Classes:
G01D7/00
Foreign References:
US3055759A | 1962-09-25 | |||
US3175401A | 1965-03-30 | |||
US3430491A | 1969-03-04 | |||
US3580079A | 1971-05-25 | |||
US3597976A | 1971-08-10 |