Document Type and Number:
Japanese Patent JPS50136029
Kind Code:
A
More Like This:
Application Number:
JP4127374A
Publication Date:
October 28, 1975
Filing Date:
April 10, 1974
Export Citation:
International Classes:
G03B17/00; G03B1/00; G03B29/00; G03B31/00; G03B31/04; (IPC1-7): G03B1/00; G03B31/00; G03B31/04
Domestic Patent References:
JP41012588A | ||||
JPS5226688A | 1977-02-28 | |||
JPS4941274A | 1974-04-18 |