Inventor
KITAMURA MASAHIDE
JP4 patents
Patents
4 patentsUS6606897B1Aug 19, 2003
Portable gas detector and its cradle
RIKEN KEIKI KK37 citations88
US6744373B2Jun 1, 2004
Portable gas alarm device
RIKEN KEIKI KK31 citations87
USD447974SSep 18, 2001
Portable gas detector-alarm
RIKEN KEIKI KK16 citations79
USD403603SJan 5, 1999
Wrist watch type gas measuring device
RIKEN KEIKI KK2 citations60