Document Type and Number:
Japanese Patent JPS5157136
Kind Code:
U
Application Number:
JP13047474U
Publication Date:
May 06, 1976
Filing Date:
October 30, 1974
Export Citation:
International Classes:
G03B21/64; G03B21/00; G03B31/06; (IPC1-7): G03B21/64; G03B21/00
Domestic Patent References:
| JPS3919861Y1 | ||||
| JPS4211182Y1 | ||||
| JPS3011259Y1 |