P

Inventor

SAGAWA WATARU

JP5 patents
⚠️ This page may combine multiple inventors who share the name “SAGAWA WATARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

2 patents

HITACHI SETSUBI ENG KK

2 patents

MITSUBISHI PENCIL CO

1 patent