Document Type and Number:
Japanese Patent JPH0253992
Kind Code:
U
Application Number:
JP13204788U
Publication Date:
April 18, 1990
Filing Date:
October 07, 1988
Export Citation:
International Classes:
D03J1/06; D03D41/00; D06B21/00; (IPC1-7): D06B21/00; D03D41/00; D03J1/06