Inventor

HAGIWARA KENZO

JP2 patents

⚠️ This page may combine multiple inventors who share the name “HAGIWARA KENZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HAKUSAN SEISAKUSHO KK

1 patent

US4762263AAug 9, 1988

Small-sized gas pressure welding machine for rails with two separate mechanisms for punching-shearing excess metal

HAKUSAN SEISAKUSHO KK7 citations63

JAPAN NATIONAL RAILWAY

1 patent

US4576324AMar 18, 1986

Gas pressure welding machine

JAPAN NATIONAL RAILWAY4 citations60