Inventor
SCHWARZ WALTER
AT20 patents
⚠️ This page may combine multiple inventors who share the name “SCHWARZ WALTER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHWARZ WALTER
8 patentsUS4147381AApr 3, 1979
Pipe coupling
SCHWARZ WALTER39 citations92
US4234368ANov 18, 1980
Method of making a pipe coupling
SCHWARZ WALTER22 citations81
US3993331ANov 23, 1976
Electrically insulating pipe coupling
SCHWARZ WALTER26 citations81
US5079938AJan 14, 1992
Process and apparatus for producing a helically seamed pipe
SCHWARZ WALTER8 citations73
US4209482AJun 24, 1980
Method of producing shaped bodies of reinforced synthetic resin
SCHWARZ WALTER16 citations73
US5280965AJan 25, 1994
Form-fitting and material-locking pipe connection, in particular electrically insulating pipe connection
SCHWARZ WALTER6 citations62
US4884426ADec 5, 1989
Device for spiral winding of tapes
SCHWARZ WALTER1 citations51
US4774827AOct 4, 1988
Process of spirally winding tapes
SCHWARZ WALTER0 citations51