Document Type and Number:
Japanese Patent JPS57129981
Kind Code:
U
Application Number:
JP1625781U
Publication Date:
August 13, 1982
Filing Date:
February 06, 1981
Export Citation:
International Classes:
F04B53/10; F04B15/00; F04B15/02; (IPC1-7): F04B21/02; F04B15/00