Document Type and Number:
Japanese Patent JPS5060297
Kind Code:
U
Application Number:
JP11392273U
Publication Date:
June 03, 1975
Filing Date:
September 29, 1973
Export Citation:
International Classes:
G02B6/04; A47G1/16; B44C5/08; B44C7/02; (IPC1-7): B44C7/02; A47G1/16; G02B5/16
Foreign References:
| US3431410A | 1969-03-04 |