Circulating junk basket
作者： George A Bumpers
DOI:
关键词: Computer science
摘要:
lens.org 参考文章(4)
Lonnie L Gage, Dual completion packer tool ,(1957)
William W Fortenberry, Magnetic improvement for jet junk baskets ,(1953)
Charles O Steed, Well retrieving tool ,(1950)
John H Kirby, Permanent magnet fishing tool ,(1953)