Title:
【考案の名称】マンホ-ル蓋
Document Type and Number:
Japanese Patent JPS5992753
Kind Code:
U
Inventors:
Takeharu Abe
Application Number:
JP18723882U
Publication Date:
June 23, 1984
Filing Date:
December 13, 1982
Export Citation:
International Classes:
E02D29/12; E02D29/14; (IPC1-7): E02D29/14