Document Type and Number:
Japanese Patent JPS5436438
Kind Code:
U
Application Number:
JP11026077U
Publication Date:
March 09, 1979
Filing Date:
August 17, 1977
Export Citation:
International Classes:
H04B10/27; G02B5/00; G02B6/28; G02B27/10; H04B10/2581; H04B10/29; (IPC1-7): G02B27/10; G02B5/00; H04B9/00
Domestic Patent References:
| JP51139644B |
Foreign References:
| US3937557A | 1976-02-10 |