Inventor
MARISSEN ROELOF H
4 patents
Patents
4 patentsUS4428591AJan 31, 1984
Plastic pipe provided with a groove
WAVIN BV17 citations78
US4338716AJul 13, 1982
Plastic pipe provided with a groove
WAVIN BV16 citations78
US4432395AFeb 21, 1984
Pipe part with socket provided with longitudinally extending channels
WAVIN BV12 citations70
US4344461AAug 17, 1982
Pipe part with socket provided with longitudinally extending channels
WAVIN BV15 citations70