Granted Patent
Utility
US 4,883,768 · App. 07/317,309
Mesa fabrication in semiconductor structures
Inventors:
James L. Swindal, Daniel H. Grantham
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Feb 28, 1989
Inventors
James L. Swindal
Daniel H. Grantham
Assignee (at issue)
UNITED TECHNOLOGIES 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.