Granted Patent
Utility
US 4,769,689 · App. 07/073,296
Stress relief in epitaxial wafers
Inventor:
Wen-Bin Lin
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Jul 13, 1987
Inventor
Wen-Bin Lin
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.