Document Type and Number:
Japanese Patent JPS52138791
Kind Code:
U
Application Number:
JP4819076U
Publication Date:
October 21, 1977
Filing Date:
April 15, 1976
Export Citation:
International Classes:
G01N21/17; G01N21/00; G01N31/00; G01N31/10; (IPC1-7): G01N21/00; G01N31/00
Domestic Patent References:
| JPS512486A | 1976-01-10 |
Foreign References:
| US3730686A | 1973-05-01 |