Granted Patent
Utility
US 5,896,713 · App. 08/969,923
Tubular skylight with vertically adjustable tube and improved roof cover seal
Inventors:
Bing-Ling Chao, David Windsor Rillie, Joseph Prenn, Christian P. Stevens
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Nov 13, 1997
Inventors
Bing-Ling Chao
David Windsor Rillie
Joseph Prenn
Christian P. Stevens
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.