Granted Patent
Utility
US 6,540,348 · App. 10/116,282
Spectacles set with detachable shelter frame
Inventor:
Yiling Xie
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Apr 4, 2002
Inventor
Yiling Xie
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.