Granted Patent
Utility
US 4,937,440 · App. 07/400,097
System and method for beam farfield shift focus compensation
Inventors:
Gregory Hofer, James C. McDonald
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Aug 29, 1989
Inventors
Gregory Hofer
James C. McDonald
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.