Inventor
MAKINO TOSHIO
US4 patents
Patents
4 patentsUS5246367ASep 21, 1993
Mouth cavity sanitary device
RICOH ELEMEX CORP167 citations97
US5197460AMar 30, 1993
Mouth cavity sanitary device
RICOH ELEMEX CORP169 citations97
US5197458AMar 30, 1993
Mouth cavity sanitary device
RICOH ELEMEX CORP142 citations97
US5323770AJun 28, 1994
Mouth cavity sanitary device
RICOH ELEMEX CORP45 citations91