Granted Patent
Utility
US 4,996,563 · App. 07/420,078
Support means for electrophotographic film core and associated elements
Inventor:
Douglass L. Blanding
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Oct 11, 1989
Inventor
Douglass L. Blanding
Assignee (at issue)
EASTMAN KODAK COMPANY
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.