Assignee
RAINER ISOLIERROHR DROSSBACH
2 granted patents·42 citations·filing 1977–1979
Top patents by PatentIndex Score
2 records- 0176US4163619ACorrugated drainage tubing with helically arranged drainage openingsRAINER ISOLIERROHR DROSSBACH·Filed 1977·Granted Aug 7, 1979·30 cites·7 claims
- 0251US4270878ACorrugated drainage tubing and method and apparatus for making drainage tubing with helically arranged drainage openingsRAINER ISOLIERROHR DROSSBACH·Filed 1979·Granted Jun 2, 1981·12 cites·9 claims
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