Granted Patent
Utility
US 4,636,842 · App. 06/676,095
"Comb filter ""hanging dot"" eliminator"
Inventor:
Werner Hartmeier
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 29, 1984
Inventor
Werner Hartmeier
Assignee (at issue)
RCA 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.