Granted Patent
Utility
US 4,301,237 · App. 06/191,627
Method for exposing substrates to X-rays
Inventor:
John A. Burns
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Sep 29, 1980
Inventor
John A. Burns
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.