Document Type and Number:
Japanese Patent JPS5033246
Kind Code:
B1
Application Number:
JP3239071A
Publication Date:
October 29, 1975
Filing Date:
May 17, 1971
Export Citation:
International Classes:
F04B15/02; (IPC1-7): F04B15/02; F04B21/02
Foreign References:
| US2998781A | 1961-09-05 |