Granted Patent
Utility
US 5,896,712 · App. 08/957,513
Light-collecting skylight cover
Inventor:
Bing-Ling Chao
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Oct 24, 1997
Inventor
Bing-Ling Chao
Assignee (at issue)
Solatube International, Inc.
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.