Granted Patent
Utility
US 4,131,487 · App. 05/846,222
Gettering semiconductor wafers with a high energy laser beam
Inventors:
Charles Walter Pearce, Vincent Joseph Zaleckas
Patented Case
View Patent ↗
Granted: Dec 26, 1978
Filed: Oct 26, 1977
Inventors
Charles Walter Pearce
Vincent Joseph Zaleckas
Assignee (at issue)
Western Electric Company, 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.