Title:
【考案の名称】さく岩機の回転装置
Document Type and Number:
Japanese Patent JPS60115993
Kind Code:
U
Inventors:
Kunihiko Matsuzawa
Application Number:
JP333384U
Publication Date:
August 06, 1985
Filing Date:
January 17, 1984
Export Citation:
International Classes:
E21B1/26; E21B1/00; (IPC1-7): E21C3/20
Domestic Patent References:
| JPS5639883A | 1981-04-15 | |||
| JPS5125723U | 1976-02-25 | |||
| JPS5328242U | 1978-03-10 |