Inventor
DENNER PETER
DE4 patents
Patents
4 patentsUS4236299ADec 2, 1980
Method and device for winding spiral fins onto oval tubing
BALCKE DUERR AG16 citations71
US4407064AOct 4, 1983
Apparatus for pulling transverse fins onto a plurality of pipes
BALCKE DUERR AG7 citations66
US4107832AAug 22, 1978
Method for winding spiral fins onto oval tubing
BALCKE DUERR AG5 citations60
US4330934AMay 25, 1982
Apparatus for pulling transverse fins onto a plurality of pipes
BALCKE DUERR AG4 citations55