Inventor
OHTA RYOZO
4 patents
⚠️ This page may combine multiple inventors who share the name “OHTA RYOZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KUBOTA LTD
3 patentsUS4279853AJul 21, 1981
Method of forming a socket end on a plastic pipe and a molding device for use of the method
KUBOTA LTD22 citations79
US4474726AOct 2, 1984
Method of producing a channeled plastic pipe with closed channel ends
KUBOTA LTD25 citations76
US4412802ANov 1, 1983
Molding device for forming a socket end on a plastic pipe
KUBOTA LTD13 citations70