Birch, Stewart, Kolasch & Birch, LLP
Passage system of vacuum cleaner
A vacuum cleaner containing an air passage system which is modified to increase the amount and speed of air drawn into the vacuum cleaner without increasing the capacity of the motor, whereby the performance of the vacuum cleaner is enhanced.
LG Electronics Inc.
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A47L A47L A47L A47L
inventional inventional inventional inventional
Seong Ho Sung IL Seong Bin
Cho Park Lee