Document Type and Number:
Japanese Patent JPS5393240
Kind Code:
U
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Application Number:
JP17614776U
Publication Date:
July 29, 1978
Filing Date:
December 28, 1976
Export Citation:
International Classes:
H04B10/27; G02B6/28; G02B27/10; H04B10/00; H04B10/29; (IPC1-7): G02B5/14; G02B27/10; H04B9/00
Domestic Patent References:
| JP48091946B |
Foreign References:
| US3901582A | 1975-08-26 |