Inventor
QUADFLIEG ERICH
NL7 patents
⚠️ This page may combine multiple inventors who share the name “QUADFLIEG ERICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MANNESMANN AG
6 patentsUS5048871ASep 17, 1991
Screwed pipe joint
MANNESMANN AG97 citations94
US6155613ADec 5, 2000
Pipe joint
MANNESMANN AG80 citations93
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
US5145710ASep 8, 1992
Method and apparatus for applying a metallic coating to threaded end sections of plastic pipes and resulting pipe
MANNESMANN AG11 citations65