Granted Patent
Utility
US 4,331,955 · App. 06/175,990
Method and apparatus for smoothing outlines
Inventor:
Walter Hansen
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Aug 7, 1980
Inventor
Walter Hansen
Assignee (at issue)
Eltra 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.