Vacuum cleaner apparatus and return system for use with the same

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US06517640B2 Vacuum cleaner apparatus and return system for use with the same 失效

Patent Title: Vacuum cleaner apparatus and return system for use with the same
Application No.: US10039600

Application Date: 2001-10-19
Publication No.: US06517640B2

Publication Date: 2003-02-11
Inventor: David Deng
Applicant: David Deng
Main IPC: A47L514
IPC: A47L514

Abstract:

A vacuum cleaner that generates an output air stream to agitate dirt and other debris on the surface being cleaned.

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