Inventor
OHBAYASHI MASAKI
US5 patents
Patents
5 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
USD322314SDec 10, 1991
Water jet mouth cleaning appliance
RICOH ELEMEX CORP129 citations95
US5323770AJun 28, 1994
Mouth cavity sanitary device
RICOH ELEMEX CORP45 citations91