Inventor
YAMADA KAZUMASA
JP9 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMADA YUKI SEIZO CO LTD
5 patentsUS4817503AApr 4, 1989
Diaphragm pump with pressure chamber having a ribbed wall
YAMADA YUKI SEIZO CO LTD26 citations91
US5002468AMar 26, 1991
Switching device for reciprocating pumps
YAMADA YUKI SEIZO CO LTD8 citations72
US5002469AMar 26, 1991
Switching device for reciprocating pumps
YAMADA YUKI SEIZO CO LTD16 citations72
US4923168AMay 8, 1990
Spool type switching valve device
YAMADA YUKI SEIZO CO LTD16 citations72
US5120202AJun 9, 1992
Switching device for reciprocating pumps
YAMADA YUKI SEIZO CO LTD4 citations61