Document Type and Number:
Japanese Patent JPS62146132
Kind Code:
U
Application Number:
JP3336486U
Publication Date:
September 16, 1987
Filing Date:
March 08, 1986
Export Citation:
International Classes:
G03B27/58; G03B21/00; G03B21/56; G03B27/32; G03C5/04; (IPC1-7): G03B27/58; G03B21/00; G03B21/56
Domestic Patent References:
JPS50124335U | 1975-10-11 | |||
JPS5854339A | 1983-03-31 | |||
JPS5034521A | 1975-04-02 | |||
JPS513632A | 1976-01-13 | |||
JPS51100808A | 1976-09-06 |