Granted Patent
Utility
US 4,977,830 · App. 07/343,556
Hydrophobic and oleophilic microporous inking rollers
Inventor:
Thomas A. Fadner
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Apr 27, 1989
Inventor
Thomas A. Fadner
Assignee (at issue)
Rockwell International 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.