Granted Patent
Utility
US 4,542,523 · App. 06/378,766
Radiographic intensifying screen manipulator
Inventor:
Herman E. Erikson
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: May 17, 1982
Inventor
Herman E. Erikson
Assignee (at issue)
Polaroid 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.