Inventor
SUNAGAWA MASAO
JP15 patents
Patents
15 patentsUS4446594AMay 8, 1984
Upright type electric cleaner
HITACHI LTD91 citations96
US5159738ANov 3, 1992
Vacuum cleaner having silencer mechanism
HITACHI LTD90 citations95
US5365633ANov 22, 1994
Vacuum cleaner
HITACHI LTD35 citations92
US5003663AApr 2, 1991
Upright-type electric vacuum cleaner
HITACHI LTD22 citations92
US4905341AMar 6, 1990
Upright-type electric vacuum cleaner
HITACHI LTD31 citations92
US4809394AMar 7, 1989
Vacuum cleaner having a blower facility structure
HITACHI LTD54 citations92
US5216778AJun 8, 1993
Vacuum cleaner
HITACHI LTD48 citations91
US6282749B1Sep 4, 2001
Vacuum cleaner and suction nozzle body thereof cross reference to related application
HITACHI LTD25 citations90
US6212732B1Apr 10, 2001
Vacuum cleaner and suction nozzle body therefor
HITACHI LTD30 citations90
USD293728SJan 12, 1988
Vacuum cleaner
HITACHI LTD30 citations89
US4955105ASep 11, 1990
Vacuum cleaner
HITACHI LTD20 citations78
US4893376AJan 16, 1990
Upright-type electric vacuum cleaner
HITACHI LTD11 citations74
USD312901SDec 11, 1990
Electric vacuum cleaner
HITACHI LTD6 citations72
US5131114AJul 21, 1992
Vacuum cleaner
HITACHI LTD6 citations60
USD302878SAug 15, 1989
Electric vacuum cleaner
HITACHI LTD1 citations51