Inventor
KRUG GERHARD
6 patents
⚠️ This page may combine multiple inventors who share the name “KRUG GERHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MANNESMANN AG
5 patentsUS5048871ASep 17, 1991
Screwed pipe joint
MANNESMANN AG97 citations94
US4153283AMay 8, 1979
Casing joint
MANNESMANN AG59 citations91
US6585299B1Jul 1, 2003
Pipe connector
MANNESMANN AG53 citations90
US6513840B1Feb 4, 2003
Drill rod coupling
MANNESMANN AG10 citations72
US4955644ASep 11, 1990
Drill pipe coupling
MANNESMANN AG20 citations71