Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2007-07-31
2011-11-22
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S339000, C015S347000
Reexamination Certificate
active
08060979
ABSTRACT:
A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.
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Choo Jong Su
Ha Gun Ho
Hwang Man Tae
Hyun Kie Tak
Jeong Hoi Kil
KED & Associates LLP
LG Electronics Inc.
Redding David A
LandOfFree
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