Granted Patent
Utility
US 4,915,744 · App. 07/306,480
High efficiency solar cell
Inventors:
Frank F. Ho, Milton Y. Yeh
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Feb 3, 1989
Inventors
Frank F. Ho
Milton Y. Yeh
Assignee (at issue)
Applied Solar Energy 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.