Document Type and Number:
Japanese Patent JPS4729558
Kind Code:
Y1
Application Number:
JP1344171U
Publication Date:
September 05, 1972
Filing Date:
March 02, 1971
Export Citation:
International Classes:
(IPC1-7): H01J29/02
Domestic Patent References:
| JP39025849A | ||||
| JPS427385Y1 | 1967-04-10 | |||
| JP35001274A | ||||
| JP33008569A |
Foreign References:
| US3237040A | 1966-02-22 | |||
| GB962023A | 1964-06-24 | |||
| US3201634A | 1965-08-17 |