The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2008
Filed:
May. 10, 2005
Applicants:
Hsuan-cheng Lee, Kaohsiung, TW;
Chang-chien LI, Taoyuan, TW;
Inventors:
Hsuan-Cheng Lee, Kaohsiung, TW;
Chang-Chien Li, Taoyuan, TW;
Assignee:
Benq Corporation, Taoyuan Shien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/26 (2006.01); G03B 21/22 (2006.01); G03B 21/00 (2006.01); A47B 8/10 (2006.01); F24F 13/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An air filtration device for projector includes a holder, a filter, and a rack. The rack is movably disposed in the holder for supporting the filter. When the rack moves to a first position, the rack is received within the holder. When the rack moves from the first position to a second position, the filter is released from the rack for replacement.