Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard Lee WilliamsfiledCriticalRichard Lee Williams
Priority claimed from EP80302998Aexternal-prioritypatent/EP0026976B1/de
Application grantedgrantedCritical
Publication of ATE4515T1publicationCriticalpatent/ATE4515T1/de
AT80302998T1979-09-041980-08-29Verfahren und apparat zur wiederherstellung des durchmessers von unterirdisch verlegten kunststoffrohren.
ATE4515T1
(de)