Title:
【考案の名称】さく岩機
Document Type and Number:
Japanese Patent JPS58134483
Kind Code:
U
Inventors:
Tokuro Fujita
Application Number:
JP2769482U
Publication Date:
September 09, 1983
Filing Date:
February 27, 1982
Export Citation:
International Classes:
E21B1/38; E21B1/00; E21B44/00; (IPC1-7): E21C3/04; E21C3/32
Domestic Patent References:
| JP35001595A |