Granted Patent
Utility
US 4,884,887 · App. 07/006,396
Method for positioning a crystal ingot
Inventor:
David A. Vanderwater
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Jan 23, 1987
Inventor
David A. Vanderwater
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.