Granted Patent
Utility
US 6,497,489 · App. 09/682,397
Projector with guiding rib in vent
Inventors:
Chang-Chien Li, Chih-Kang Peng, Yu-Hou Tsao
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Aug 29, 2001
Inventors
Chang-Chien Li
Chih-Kang Peng
Yu-Hou Tsao
Assignee (at issue)
BenQ Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.